Works (204)

Updated: April 4th, 2024 03:36

2024 journal article

Activation of primate frontal eye fields with a CMUT phased array system

JOURNAL OF NEUROSCIENCE METHODS, 402.

By: M. Riley*, B. Roeder*, W. Zinke, M. Weisend*, D. Eidum*, G. Pinton n, A. Biliroglu n, F. Yamaner n, O. Oralkan n, P. Connolly*

author keywords: Transcranial focused ultrasound; Non-invasive stimulation; Frontal eye fields; Local field response; Behavioral task
TL;DR: A new approach for non-invasive stimulation during performance of a behavioral task is provided with the ability to steer stimulation patterns and target using a large amount of transducers, which will be greatly improved for future clinical and research applications. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 22, 2024

2024 journal article

Design and Fabrication of 1-D CMUT Arrays for Dual-Mode Dual-Frequency Acoustic Angiography Applications

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 71(1), 191–201.

author keywords: Acoustic angiography (AA); capacitive micromachined ultrasonic transducer (CMUT); dual-mode dual-frequency array; glass substrate
TL;DR: A novel scheme with a capacitive micromachined ultrasonic transducer array to receive high-frequency microbubble harmonics in collapse mode and to transmit a low-frequency high-pressure pulse by releasing the CMUT plate from collapse and pull it back to collapse again in the same transmit-receive cycle. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: December 13, 2023

2023 journal article

Deep-Learning-Based High-Intensity Focused Ultrasound Lesion Segmentation in Multi-Wavelength Photoacoustic Imaging

BIOENGINEERING-BASEL, 10(9).

By: X. Wu n, J. Sanders n, M. Dundar* & O. Oralkan n

author keywords: multi-wavelength photoacoustic imaging; high-intensity focused ultrasound therapy; lesion segmentation; deep learning; machine learning; convolutional neural network
TL;DR: The feasibility and high performance of the deep-learning-based lesion segmentation method in MWPA imaging to monitor HIFU lesion formation and the potential to implement this method in real time are demonstrated. (via Semantic Scholar)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: September 12, 2023

2023 article

Performance of A Monolithic E-Nose Array Integrating MEMS and ALD Processing

2023 IEEE SENSORS.

By: Y. Zhou n, J. Dieffenderfer n, E. Sennik n, M. Aleem n, J. Speight n, S. Vasisht n, O. Oralkan n, B. Lee*, V. Misra n

author keywords: Gas Sensor; ALD; Metal Oxide; MOx; E-Nose; Monolithic Array; VOC; Nitrogen Dioxide; Carbon Monoxide; Ethanol; Mixture; MEMS; BEOL; Microheater; Dry Etching; SnO2
Sources: Web Of Science, NC State University Libraries
Added: February 12, 2024

2023 journal article

Photoacoustic imaging of visually evoked cortical and subcortical hemodynamic activity in mouse brain: feasibility study with piezoelectric and capacitive micromachined ultrasonic transducer (CMUT) arrays

BIOMEDICAL OPTICS EXPRESS, 14(12), 6283–6290.

By: K. Chang, E. Belekov n, X. Wang, K. Wong, O. Oralkan n & G. Xu

TL;DR: Results show that the piezoelectric transducer array and the CMUT array exhibit comparable imaging performance, and both arrays can capture visually evoked hemodynamic responses in subcortical as well as cortical regions of the mouse brain. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 2, 2024

2023 article

Plant Disease Detection Using an Electronic Nose

2023 IEEE SENSORS.

By: E. Sennik n, S. Kinoshita-Millard, Y. Oh n, C. Kafer, R. Dean n & O. Oralkan n

author keywords: VOCs; plants; infection; disease; e-nose; machine learning
TL;DR: Experimental results demonstrate the effectiveness of the proposed approach in achieving high accuracy for plant disease detection at the end of the 11th day after plant inoculation. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: February 12, 2024

2022 journal article

A Handheld Imaging Probe for Acoustic Angiography With an Ultrawideband Capacitive Micromachined Ultrasonic Transducer (CMUT) Array

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 69(7), 2318–2330.

author keywords: Probes; Imaging; Acoustics; Bandwidth; Angiography; Frequency control; Electrodes; Acoustic angiography (AA); alternate amplitude modulation (aAM); capacitive micromachined ultrasonic transducer (CMUT); glass substrate; handheld ultrasound probe; harmonic ultrasound imaging; ultrawideband (UWB) array
MeSH headings : Angiography; Equipment Design; Transducers; Ultrasonics; Ultrasonography / methods
TL;DR: An imaging probe with a 256-element ultrawideband (UWB) 1-D capacitive micromachined ultrasonic transducer (CMUT) array designed for acoustic angiography (AA) demonstrates the suitability of the UWB CMUT for AA. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: July 1, 2022

2022 article

A pre-charged CMUT structure with a built-in charge storage capacitor

2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS).

By: M. Annayev n, F. Yamaner n & O. Oralkan n

author keywords: Pre-charged; zero-bias; energy transfer; capacitive micromachined ultrasonic transducer; CMUT
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: February 6, 2023

2022 journal article

An Ultrasonic Energy Harvesting IC Providing Adjustable Bias Voltage for Pre-Charged CMUT

IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, 16(5), 842–851.

By: L. Zhao*, M. Annayev n, O. Oralkan n & Y. Jia*

author keywords: Acoustics; Video recording; Integrated circuits; Energy harvesting; Clocks; Voltage control; Distributed Bragg reflectors; High voltage charge pump; pre-charged CMUT; ultrasonic energy harvesting; wireless power transmission
MeSH headings : Ultrasonics; Ultrasonography; Equipment Design; Transducers; Electric Capacitance
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: December 1, 2022

2022 article

Performance Assessment of Ultra-Wideband and Dual-Mode 1D CMUT Arrays for Acoustic Angiography

2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS).

By: E. Belekov n, K. Bautista*, M. Annayev n, O. Adelegan n, A. Biliroglu n, T. Kierski*, J. Sanders n, R. Kemal n ...

author keywords: capacitive micromachined ultrasonic transducer; ultra-wideband; dual-mode; acoustic angiography; ultrasound handheld probe; contrast agent
TL;DR: A custom 256-channel imaging probe with integrated low-noise amplifiers and supporting power circuitry is designed with a strong use case for the UWB and dual-mode CMUT arrays in acoustic angiography applications. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: February 6, 2023

2022 journal article

Transcranial Neuromodulation Array With Imaging Aperture for Simultaneous Multifocus Stimulation in Nonhuman Primates

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 69(1), 261–272.

By: R. Jones n, C. Caskey*, P. Dayton n, O. Oralkan n & G. Pinton n

author keywords: Ultrasonic imaging; Neuromodulation; Brain modeling; Imaging; Focusing; Attenuation; Transducers; Customized array; focused ultrasound; neuromodulation; phase aberration correction; simultaneous stimulation; transcranial
MeSH headings : Animals; Brain / diagnostic imaging; Primates; Skull / diagnostic imaging; Transducers; Ultrasonic Therapy
TL;DR: Using 3-D Fullwave simulations, this work has designed an ultrasound neuromodulation array for nonhuman primates that can simultaneously focus on multiple targets and include an imaging aperture for additional functional imaging. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: January 1, 2022

2021 journal article

A Low-Power Wearable E-Nose System Based on a Capacitive Micromachined Ultrasonic Transducer (CMUT) Array for Indoor VOC Monitoring

IEEE Sensors Journal, 21(18), 19684–19696.

By: M. Mahmud n, C. Seok n, X. Wu n, E. Sennik n, A. Biliroglu n, O. Adelegan n, I. Kim n, J. Jur n, F. Yamaner n, O. Oralkan n

author keywords: Sensors; Sensor arrays; Chemical sensors; Sensitivity; Sensor systems; Monitoring; Resonators; Capacitive micromachined ultrasonic transducer (CMUT); multi-channel; e-nose; volatile organic compound (VOC); automated gas generation; wireless; sensitivity; selectivity; sensor resolution
TL;DR: A low-power wearable e-nose system based on a capacitive micromachined ultrasonic transducer (CMUT) array that can be used for identification of volatiles with suitable pattern-recognition techniques is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: ORCID
Added: November 16, 2021

2021 article

A Row-Column (RC) Addressed 2-D Capacitive Micromachined Ultrasonic Transducer (CMUT) Array on a Glass Substrate

Sanders, J. L., Biliroglu, A. O., Wu, X., Adelegan, O. J., Yamaner, F. Y., & Oralkan, O. (2021, March). IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol. 68, pp. 767–776.

By: J. Sanders n, A. Biliroglu n, X. Wu n, O. Adelegan n, F. Yamaner n & O. Oralkan n

author keywords: Electrodes; Substrates; Imaging; Impedance measurement; Two dimensional displays; Glass; Acoustics; Capacitive micromachined ultrasonic transducer (CMUT); glass substrate; row-column (RC) array; ultrasound imaging
TL;DR: A row-column capacitive micromachined ultrasonic transducer array fabricated using anodic bonding on a borosilicate glass substrate is presented to reduce the bottom electrode-to-substrate capacitive coupling and improves the relative response of the elements when top or bottom electrodes are used as the “signal” (active) electrode. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 26, 2021

2021 journal article

A Wearable Ultrasonic Neurostimulator-Part I: A 1D CMUT Phased Array System for Chronic Implantation in Small Animals

IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, 15(4), 692–704.

By: C. Seok n, F. Yamaner n, M. Sahin* & O. Oralkan n

author keywords: ASIC; brain stimulation; capacitive micromachined ultrasonic transducer (CMUT); freely behaving animals; neurostimulation; ultrasound
MeSH headings : Animals; Equipment Design; Transducers; Ultrasonics; Ultrasonography; Wearable Electronic Devices
TL;DR: A wireless ultrasonic neurostimulator, aiming at a truly wearable device for brain stimulation in small behaving animals, and hydrophone-based acoustic measurements were performed to demonstrate the beam forming and steering capability of the proposed system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 27, 2021

2021 journal article

A Wearable Ultrasonic Neurostimulator-Part II: A 2D CMUT Phased Array System With a Flip-Chip Bonded ASIC

IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, 15(4), 705–718.

By: C. Seok n, O. Adelegan n, A. Biliroglu n, F. Yamaner n & O. Oralkan n

author keywords: Capacitive micromachined ultrasonic transducer (CMUT); neurostimulator; ultrasound
MeSH headings : Animals; Equipment Design; Mice; Transducers; Ultrasonics; Ultrasonography; Wearable Electronic Devices
TL;DR: A 2D ultrasonic transmit phased array based on a 32 × 32 CMUT array flip-chip bonded to a pitch-matched pulser ASIC for ultrasonic neuromodulation is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 27, 2021

2021 article

Design and Fabrication of 1D CMUT Arrays for Dual-Mode Acoustic Angiography Applications - Preliminary Results

INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).

By: M. Annayev n, O. Adelegan n, F. Yamaner n, P. Dayton n & O. Oralkan n

author keywords: Dual-mode dual-frequency; capacitive micromachined ultrasonic transducer; CMUT; acoustic angiography
TL;DR: Finite element model simulation results show that the fabricated devices can transmit at low frequency and receive echoes at high frequency (> 15 MHz), which are verified by experimental results. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022

2021 article

Design and Fabrication of Single-Element CMUTs for Forming a Transcranial Array for Focused Beam Applications

INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).

By: T. Ibn Minhaj n, O. Adelegan n, A. Biliroglu n, M. Annayev n, Z. Coutant n, F. Yamaner n, O. Oralkan n

author keywords: ultrasound; focused; ultrasound; transducer; transcranial; fabrication; stimulation
Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022

2021 journal article

Design and Fabrication of Wideband Air-Coupled Capacitive Micromachined Ultrasonic Transducers With Varying Width Annular-Ring and Spiral Cell Structures

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 68(8), 2749–2759.

By: O. Adelegan n, Z. Coutant n, X. Wu n, F. Yamaner n & O. Oralkan n

author keywords: Annular; anodic bonding process; capacitive micromachined ultrasonic transducer (CMUT); glass substrate; spiral
TL;DR: A design strategy and fabrication process for developing improved concentric annular- and novel spiral-shaped capacitive micromachined ultrasonic transducers that can generate high output pressure and provide wide bandwidth in air are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 9, 2021

2021 article

Design of Pre-Charged CMUTs with a Metal Floating Gate

INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).

By: M. Annayev n, O. Adelegan n, F. Yamaner n & O. Oralkan n

author keywords: Pre-charged; zero-bias; energy harvesting; capacitive micromachined ultrasonic transducer; CMUT
Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022

2021 journal article

Electronic nose system based on a functionalized capacitive micromachined ultrasonic transducer (CMUT) array for selective detection of plant volatiles

SENSORS AND ACTUATORS B-CHEMICAL, 341.

By: E. Sennik n, F. Erden n, N. Constantino n, Y. Oh n, R. Dean n & O. Oralkan n

author keywords: CMUT; Electronic nose; Gas sensor; k-NN; Machine learning; Plant disease
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: April 20, 2021

2021 journal article

Entrainment of cerebellar Purkinje cell spiking activity using pulsed ultrasound stimulation

BRAIN STIMULATION, 14(3), 598–606.

By: A. Asan*, Q. Kang*, O. Oralkan n & M. Sahin*

author keywords: Focused ultrasound stimulation; Neuromodulation; Cerebellar cortex
MeSH headings : Action Potentials; Animals; Cerebellar Cortex; Cerebral Cortex; Purkinje Cells; Rats; Ultrasonic Waves
TL;DR: FUS can entrain spiking activity of single cells on a spike-by-spike basis as demonstrated here in the rat cerebellar cortex as well as involvement of a long-lasting inhibitory mechanism. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: June 10, 2021

2021 journal article

Fabrication of 32 x 32 2D Capacitive Micromachined Ultrasonic Transducer (CMUT) Arrays on a Borosilicate Glass Substrate With Silicon-Through-Wafer Interconnects Using Sacrificial Release Process

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 30(6), 968–979.

By: O. Adelegan n, Z. Coutant n, T. Minhaj n, C. Seok n, A. Biliroglu n, F. Yamaner n, O. Oralkan n

author keywords: Capacitive micromachined ultrasonic transducer (CMUT); 2D arrays; glass substrate; silicon-through-glass-vias (Si-TGV); sacrificial release process
UN Sustainable Development Goal Categories
Sources: ORCID, Web Of Science, NC State University Libraries
Added: November 10, 2021

2021 journal article

Soybean Cyst Nematodes Influence Aboveground Plant Volatile Signals Prior to Symptom Development

FRONTIERS IN PLANT SCIENCE, 12.

By: N. Constantino n, Y. Oh n, E. Sennik n, B. Andersen n, M. Warden*, O. Oralkan n, R. Dean n

author keywords: soybean cyst nematode; VOCs; early disease detection; GC-MS; soybean
TL;DR: It is demonstrated that SCN infestation elevates the release of certain VOCs from foliage and that some are evident prior to symptom development, and may be valuable for innovative diagnostic approaches. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: October 26, 2021

2020 journal article

An Improved CMUT Structure Enabling Release and Collapse of the Plate in the Same Tx/Rx Cycle for Dual-Frequency Acoustic Angiography

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 67(11), 2291–2302.

By: M. Mahmud n, X. Wu*, J. Sanders n, A. Biliroglu n, O. Adelegan n, I. Newsome n, F. Yamaner n, P. Dayton n, O. Oralkan n

author keywords: Acoustics; Imaging; Transducers; Ultrasonic imaging; Finite element analysis; Electrodes; Frequency control; Contrast-enhanced ultrasound imaging; dual-mode operation; high-frequency (HF) receive; insulation spacers; low-frequency (LF) transmit; microbubbles
MeSH headings : Angiography / instrumentation; Angiography / methods; Contrast Media; Equipment Design; Finite Element Analysis; Microbubbles; Phantoms, Imaging; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: The ability to detect the microbubble signals with good contrast, and the background reflection is adequately suppressed, indicating the feasibility of the presented approach for acoustic angiography. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: ORCID
Added: October 24, 2020

2020 review

Editors' Choice-Critical Review-A Critical Review of Solid State Gas Sensors

[Review of ]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 167(3).

By: G. Hunter*, S. Akbar*, S. Bhansali*, M. Daniele n, P. Erb n, K. Johnson*, C. Liu*, D. Miller* ...

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: June 22, 2020

2020 journal article

Fabrication of 2D Capacitive Micromachined Ultrasonic Transducer (CMUT) Arrays on Insulating Substrates With Through-Wafer Interconnects Using Sacrificial Release Process

Journal of Microelectromechanical Systems, 29(4), 553–561.

By: O. Adelegan n, Z. Coutant n, X. Zhang n, F. Yamaner n & O. Oralkan n

author keywords: Capacitive micromachined ultrasonic transducer (CMUT); 2D arrays; glass substrate; alkali-free glass; through-glass-Vias (TGV); sacrificial release process
TL;DR: This study shows an alternative method to fabricate 2D CMUT arrays on glass substrates with metal interconnects, especially when the substrate is not suitable for anodic bonding, as well as improving reliability and reduction in parasitic interconnect capacitance and resistance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: ORCID
Added: May 7, 2020

2020 article

Guest Editorial Special Issue on Selected Papers From the IEEE Sensors Conference 2018

Dahiya, R., Oralkan, O., & Pratap, R. (2020, July 1). IEEE SENSORS JOURNAL, Vol. 20, pp. 6792–6793.

By: R. Dahiya*, O. Oralkan n & R. Pratap*

TL;DR: The 2018 edition of the Sensors Conference was held on October 28–31 in New Delhi — the capital city of India that has been inhabited for six thousand years and has seen a great many upheavals in history. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: July 13, 2020

2019 journal article

A Low-Power Wireless Multichannel Gas Sensing System Based on a Capacitive Micromachined Ultrasonic Transducer (CMUT) Array

IEEE INTERNET OF THINGS JOURNAL, 6(1), 831–843.

By: C. Seok n, M. Mahmud n, M. Kumar n, O. Adelegan n, F. Yamaner n & O. Oralkan n

author keywords: Capacitive micromachined ultrasonic transducer (CMUT); frequency counter; front-end integrated circuit (IC); gravimetric sensor; Internet of Things (IoT); multichannel gas sensor; volatile organic compound (VOC)
TL;DR: A complete low-power wireless gas-sensing system based a capacitive micromachined ultrasonic transducer array, which is known to have several advantages such as high mass sensitivity, easy implementation of a multielement structure, and high selectivity upon polymer coating is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: March 11, 2019

2019 journal article

An FPGA-Based Backend System for Intravascular Photoacoustic and Ultrasound Imaging

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 66(1), 45–56.

By: X. Wu n, J. Sanders n, X. Zhang n, F. Yamaner n & O. Oralkan n

author keywords: Data acquisition; finite-state machine (FSM); field-programmable gate array (FPGA); photoacoustic (PA) imaging; software/hardware codesign; ultrasound (US) imaging; velocity measurement
MeSH headings : Algorithms; Equipment Design; Image Processing, Computer-Assisted / methods; Phantoms, Imaging; Photoacoustic Techniques / instrumentation; Photoacoustic Techniques / methods; Transducers; Ultrasonography, Interventional / instrumentation; Ultrasonography, Interventional / methods
TL;DR: A low-cost, compact, high-speed, and programmable imaging system based on a field-programmable gate array suitable for dual-mode forward-looking IVUS/IVPA imaging that provides a convenient backend platform for research and clinical IVPA and IVUS imaging. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 18, 2019

2018 conference paper

A CMUT - Based Electronic Nose for Real- Time Monitoring of Volatiles Emitted by Plants: Preliminary Results

2018 IEEE SENSORS. Presented at the 2018 IEEE Sensors.

By: M. Mahmud, N. Constantino n, C. Seok, F. Yamaner, R. Dean n & O. Oralkan*

Event: 2018 IEEE Sensors

UN Sustainable Development Goal Categories
10. Reduced Inequalities (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2018 journal article

A Fast-Switching (1.35-mu s) Low-Control-Voltage (2.5-V) MEMS T/R Switch Monolithically Integrated With a Capacitive Micromachined Ultrasonic Transducer

JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 27(2), 190–200.

By: X. Zhang n, O. Adelegan n, F. Yamaner n & O. Oralkan n

author keywords: Microelectromechanical systems (MEMS) switch; capacitive micromachined ultrasonic transducer (CMUT); ultrasound imaging system; transmit/receive (T/R); low-voltage electronics
TL;DR: The presented MEMS switch could potentially eliminate the high-voltage process requirement for the on-chip front-end electronics of a CMUT-based ultrasound imaging system and thus improve the overall system efficiency. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2018 conference paper

A Row-Column (RC) Addressed 2D Capacitive Micromachined Ultrasonic Transducer (CMUT) Array on a Glass Substrate: Preliminary Results

2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Presented at the 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

Event: 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

MeSH headings : Cross-Sectional Studies; Electric Capacitance; Electric Impedance; Electrodes; Equipment Design; Transducers; Ultrasonics / instrumentation
TL;DR: Preliminary characterization results from a 32 x 32 row-column (RC) addressed 2D capacitive micromachined ultrasonic transducer (CMUT) array showed that the array elements behave similarly when ground and hot electrodes were switched between the top and bottom electrodes for all of the measured parameters. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2018 journal article

Backward-Mode Photoacoustic Imaging Using Illumination Through a CMUT With Improved Transparency

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 65(1), 85–94.

author keywords: Acoustic transducers; capacitive sensors; glass; indium tin oxide; photoacoustic imaging
MeSH headings : Algorithms; Equipment Design; Indocyanine Green / chemistry; Phantoms, Imaging; Photoacoustic Techniques / instrumentation; Photoacoustic Techniques / methods; Silicon Compounds / chemistry; Transducers; Ultrasonography / instrumentation
TL;DR: A capacitive micromachined ultrasonic transducer (CMUT) with improved transparency for photoacoustic imaging (PAI) with backside illumination is described and CMUTs with the proposed structure are promising for PAI withBackside illumination. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 9, 2019

2018 conference paper

Design and Fabrication of High-Frequency Ultra-Wideband 1D CMUT Arrays for Acoustic Angiography Applications - Preliminary Results

2018 IEEE International Ultrasonics Symposium (IUS). Presented at the 2018 IEEE International Ultrasonics Symposium (IUS).

By: O. Adelegan n, R. Kemal*, F. Yamaner n, P. Dayton n & O. Oralkan n

Event: 2018 IEEE International Ultrasonics Symposium (IUS)

TL;DR: This work explored the advantages of a thin silicon plate with an added central mass combined with a reduced bottom electrode area to further improve the bandwidth of 1D capacitive micromachined ultrasonic transducer arrays. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2018 conference paper

Design and Implementation of Wideband CMUTs for Airborne Applications - Preliminary Results

2018 IEEE International Ultrasonics Symposium (IUS). Presented at the 2018 IEEE International Ultrasonics Symposium (IUS).

By: O. Adelegan n, F. Yamaner n & O. Oralkan n

Event: 2018 IEEE International Ultrasonics Symposium (IUS)

Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2018 conference paper

Towards an Untethered Ultrasound Beamforming System for Brain Stimulation in Behaving Animals

2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Presented at the 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC).

By: C. Seok n, Z. Ali n, F. Yamaner n, M. Sahin* & O. Oralkan n

Event: 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

MeSH headings : Animals; Brain / physiology; Deep Brain Stimulation / instrumentation; Equipment Design; Mice; Transducers; Ultrasonography
TL;DR: A wireless ultrasound transmit (TX) beamforming system, potentially enabling wearable brain stimulation for small awake/behaving animals, and measuring 6-dB beamwidth is promising in that it can stimulate a specific region of the brain, especially for small animals such as mice. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2017 conference paper

A front-end integrated circuit for a 2D capacitive micromachined ultrasound transducer (CMUT) array as a noninvasive neural stimulator

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

By: C. Seok n, X. Wu n, F. Yamaner n & O. Oralkan n

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

TL;DR: A front-end integrated circuit for an ultrasound neurostimulation system, to be interfaced with a 16×16 2D CMUT array to realize an ultrasound field pattern (USFP) using quantized phases and amplitudes is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2017 conference paper

A handheld 1D transparent CMUT array probe for photoacoustic imaging: Preliminary results

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

TL;DR: A 1D PAI probe that integrates a 1D CMUT array, a fiber bundle, in-probe optics, and low-noise amplifiers which interface with a real-time imaging system is presented and the PAI capability of a single transparent CMUT element is demonstrated. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries, ORCID
Added: March 24, 2019

2017 conference paper

A high-frequency and high-frame-rate ultrasound imaging system design on an FPGA evaluation board for capacitive micromachined ultrasonic transducer arrays

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

TL;DR: The design of a compact US imaging system for capacitive micromachined ultrasonic transducer (CMUT) arrays implemented on an FPGA evaluation board that features high frequency and high frame rate is reported on. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2017 conference paper

Adaptation of the acoustic angiography technique for use with a capacitive micromachined ultrasound transducer (CMUT)

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

TL;DR: This work presents a CMUT-specific version of the dual-frequency superharmonic imaging technique known as “acoustic angiography” (AA), which combines a low frequency transmit with a high frequency receive to create microvascular images, but two-element prototypes are required to do so. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 conference paper

An optically transparent capacitive micromachined ultrasonic transducer (CMUT) fabricated using SU-8 or BCB adhesive wafer bonding

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2017 journal article

Fabrication of Vacuum-Sealed Capacitive Micromachined Ultrasonic Transducers With Through-Glass-Via Interconnects Using Anodic Bonding

Journal of Microelectromechanical Systems, 26(1), 226–234.

By: X. Zhang n, F. Yamaner* & O. Oralkan n

UN Sustainable Development Goal Categories
Sources: NC State University Libraries, NC State University Libraries, Crossref
Added: August 6, 2018

2017 conference paper

Gravimetric biosensor based on a capacitive micromachined ultrasonic transducer functionalized with peptide ligands

2017 IEEE SENSORS. Presented at the 2017 IEEE SENSORS.

By: M. Mahmud, H. Reese, A. Joshipura, C. Seok, F. Yamaner, M. Daniele n, S. Menegatti, O. Oralkan*

Event: 2017 IEEE SENSORS

Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2017 conference paper

Improved CMUT structure and method of operation for dual-frequency acoustic angiography

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

TL;DR: A novel scheme to transmit a LF high-pressure pulse from a capacitive micromachined ultrasonic transducer (CMUT) operating in conventional mode and then switching to collapse mode to receive the HF microbubble harmonics in the same transmit-receive cycle is proposed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2017 conference paper

Integration of a dual-mode catheter for ultrasound image guidance and HIFU ablation using a 2-D CMUT array

2017 IEEE International Ultrasonics Symposium (IUS). Presented at the 2017 IEEE International Ultrasonics Symposium (IUS).

By: J. Jang*, C. Chang*, M. Rasmussen*, A. Moini*, K. Brenner*, D. Stephens*, O. Oralkan n, B. Khuri-Yakub*

Event: 2017 IEEE International Ultrasonics Symposium (IUS)

TL;DR: A dual-mode catheter that can switch between ultrasound imaging mode and HIFU ablation mode is developed and validated the functionality of both modes of the dual- mode catheter in oil. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2017 conference paper

Multi-wavelength photoacoustic imaging for monitoring lesion formation during high-intensity focused ultrasound therapy

Photons plus ultrasound: imaging and sensing 2017, 10064.

By: X. Wu n, J. Sanders n, M. Dundar* & O. Oralkan n

TL;DR: A machine-learning-based method for lesion monitoring with multi-wavelength PAI (MWPAI), where PAI is repeated at a sequence of wavelengths and a stack of multi-Wavelength photoacoustic images is acquired, which shows that the lesions can be identified clearly. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

2D CMUT array based ultrasonic micromanipulation platform

2016 IEEE International Ultrasonics Symposium (IUS). Presented at the 2016 IEEE International Ultrasonics Symposium (IUS).

By: A. Zeshan*, X. Zhang n, O. Oralkan n & F. Yamaner*

Event: 2016 IEEE International Ultrasonics Symposium (IUS)

Sources: NC State University Libraries, NC State University Libraries, Crossref
Added: August 6, 2018

2016 conference paper

A MEMS T/R switch embedded in CMUT structure for ultrasound imaging frontends

2016 IEEE International Ultrasonics Symposium (IUS). Presented at the 2016 IEEE International Ultrasonics Symposium (IUS).

By: X. Zhang n, A. Zeshan*, O. Adelegan n, F. Yamaner* & O. Oralkan n

Event: 2016 IEEE International Ultrasonics Symposium (IUS)

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries, Crossref
Added: August 6, 2018

2016 conference paper

A battery-operated wireless multichannel gas sensor system based on a capacitive micromachined ultrasonic transducer (CMUT) array

2016 ieee sensors.

By: C. Seok n, M. Mahmud n, O. Adelegan n, X. Zhang n & O. Oralkan n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 conference paper

CMUTs on glass with ITO bottom electrodes for improved transparency

2016 IEEE International Ultrasonics Symposium (IUS). Presented at the 2016 IEEE International Ultrasonics Symposium (IUS).

By: X. Zhang n, O. Adelegan n, F. Yamaner* & O. Oralkan n

Event: 2016 IEEE International Ultrasonics Symposium (IUS)

Sources: NC State University Libraries, NC State University Libraries, Crossref
Added: August 6, 2018

2016 journal article

Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease

IEEE Journal of Biomedical and Health Informatics, 20(5), 1251–1264.

By: J. Dieffenderfer n, H. Goodell n, S. Mills n, M. McKnight n, S. Yao n, F. Lin n, E. Beppler n, B. Bent n ...

author keywords: Environmental and physiological sensing; wearable asthma monitoring
MeSH headings : Asthma / diagnosis; Chronic Disease; Electric Impedance; Electrocardiography; Equipment Design; Humans; Monitoring, Ambulatory / instrumentation; Monitoring, Ambulatory / methods; Photoplethysmography; Skin / physiopathology; Spirometry
TL;DR: The preliminary efforts to achieve a submilliwatt system ultimately powered by the energy harvested from thermal radiation and motion of the body are described with the primary contributions being an ultralow-power ozone sensor, an volatile organic compounds sensor, spirometer, and the integration of these and other sensors in a multimodal sensing platform. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2016 conference paper

Photoacoustic-imaging-based temperature monitoring for high-intensity focused ultrasound therapy

2016 38th annual international conference of the ieee engineering in medicine and biology society (embc), 3235–3238.

By: X. Wu n, J. Sanders n, D. Stephens* & O. Oralkan*

MeSH headings : Animals; Cattle; High-Intensity Focused Ultrasound Ablation / methods; Imaging, Three-Dimensional; Photoacoustic Techniques / methods; Spectrum Analysis; Temperature
TL;DR: A noninvasive approach for temperature measurement during HIFU therapy based on photoacoustic imaging (PAI) is demonstrated, which can be used to convert the PA image to a real-time temperature map. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 journal article

Wideband acoustic activation and detection of droplet vaporization events using a capacitive micromachined ultrasonic transducer

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 139(6), 3193–3198.

By: A. Novell n, C. Arena n, O. Oralkan n & P. Dayton n

MeSH headings : Contrast Media / chemistry; Equipment Design; Fluorocarbons / chemistry; Lipids / chemistry; Microbubbles; Time Factors; Transducers; Ultrasonography / instrumentation; Volatilization
TL;DR: This study exploited the wide bandwidth of a 128-element capacitive micromachined ultrasonic transducer array for activation and real-time imaging of ADV events from droplets circulating in a tube to provide a substantial increase of the contrast-to-noise ratio. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

A Three-Mask Process for Fabricating Vacuum-Sealed Capacitive Micromachined Ultrasonic Transducers Using Anodic Bonding

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 62(5), 972–982.

By: F. Yamaner*, X. Zhang n & O. Oralkan n

MeSH headings : Electrodes; Equipment Design; Microtechnology; Models, Theoretical; Silicon Compounds / chemistry; Transducers; Ultrasonography / instrumentation; Vacuum
TL;DR: This paper introduces a simplified fabrication method for vacuum-sealed capacitive micromachined ultrasonic transducer arrays using anodic bonding, which combines the advantages of a patterned metal bottom electrode on an insulating substrate, specifically low parasitic series resistance and low parasitic shunt capacitance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 conference paper

A capacitive micromachined ultrasonic transducer (CMUT) array as a low-power multi-channel volatile organic compound (VOC) sensor

2015 ieee sensors, 181–184.

By: M. Mahmud, M. Kumar, X. Zhang, F. Yamaner, H. Nagle & O. Oralkan

Source: NC State University Libraries
Added: August 6, 2018

2015 conference paper

A low-power integrated circuit for interfacing a capacitive micromachined ultrasonic transducer (CMUT) based resonant gas sensor

2015 ieee sensors, 1781–1784.

By: M. Kumar n, C. Seok n, M. Mahmud n, X. Zhang n & O. Oralkan n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Design of high-frequency broadband CMUT arrays

2015 IEEE International Ultrasonics Symposium (IUS). Presented at the 2015 IEEE International Ultrasonics Symposium (IUS).

By: X. Zhang n, F. Yamanery, O. Adelegan n & O. Oralkan n

Event: 2015 IEEE International Ultrasonics Symposium (IUS)

author keywords: High frequency transducer array; Broadband; CMUT; Anodic bonding; Glass
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2015 article

Dual-Mode Integrated Circuit for Imaging and HIFU With 2-D CMUT Arrays

2015 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS).

By: J. Jang*, M. Rasmussen*, A. Bhuyan*, H. Yoon*, A. Moini*, C. Chang*, R. Watkins, J. Choe* ...

TL;DR: A dual-mode integrated circuit (IC) that can perform both ultrasound imaging and HIFU with a single 2D capacitive micromachined ultrasonic transducer array is presented, combining these two systems for ease of use. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Fabrication of capacitive micromachined ultrasonic transducers with through-glass-via interconnects

2015 IEEE International Ultrasonics Symposium (IUS). Presented at the 2015 IEEE International Ultrasonics Symposium (IUS).

By: X. Zhang n, F. Yamanery & O. Oralkan n

Event: 2015 IEEE International Ultrasonics Symposium (IUS)

author keywords: CMUT; TGV; Anodic bonding; 3D integration; Glass
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, Crossref
Added: August 6, 2018

2015 journal article

Flexible Technologies for Self-Powered Wearable Health and Environmental Sensing

PROCEEDINGS OF THE IEEE, 103(4), 665–681.

By: V. Misra n, A. Bozkurt n, B. Calhoun*, T. Jackson*, J. Jur n, J. Lach*, B. Lee n, J. Muth n ...

author keywords: Atomic layer deposition; CMUT; environmental monitoring; environmental sensor; flexible electrode; motion harvesting; physiological sensor; piezoelectric; PZT; self-powered; silver nanowire; TEG; thermoelectrics; ultra-low power; ultra-low power SOC; volatile organic compound sensor; wearable device
TL;DR: The latest advances in high-efficiency nanostructured energy harvesters and storage capacitors, new sensing modalities that consume less power, low power computation, and communication strategies, and novel flexible materials that provide form, function, and comfort are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 conference paper

Self-powered wearable sensor platforms for wellness

2015 International Conference on Compilers, Architecture and Synthesis for Embedded Systems (CASES), 187–187.

By: V. Misra, J. Lach, A. Bozkurt, B. Calhoun, S. Datta & O. Oralkan

Source: NC State University Libraries
Added: August 6, 2018

2014 journal article

A Multichannel Oscillator for a Resonant Chemical Sensor System

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 61(10), 5632–5640.

author keywords: Capacitive micromachined ultrasonic transducer (CMUT); chemical sensor; humidity detection; multichannel oscillators
TL;DR: An operational-amplifier-based multichannel oscillator that interfaces with a 50-MHz capacitive micromachined ultrasonic transducer array is presented for chemical sensing applications and the feasibility of the developed oscillator for the chemical sensing application is demonstrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 conference paper

A low-power gas sensor for environmental monitoring using a capacitive micromachined ultrasonic transducer

IEEE SENSORS 2014 Proceedings. Presented at the 2014 IEEE Sensors.

By: M. Mahmud n, J. Li n, J. Lunsford n, X. Zhang n, F. Yamaner n, H. Nagle n, O. Oralkan n

Event: 2014 IEEE Sensors

Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2014 article

An Ultrasound-Based Noninvasive Neural Interface to the Retina Projection Algorithm and Frontend Integrated Circuit Architecture

2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), pp. 2623–2626.

By: X. Wu n, M. Kumar n & O. Oralkan n

author keywords: FUS; Neural stimulation; Noninvasiveness; FFT
TL;DR: The algorithm and the frontend integrated circuit (IC) architecture design for an ultrasound-based noninvasive neural interface to the retina based on the fast Fourier transform (FFT) makes real-time implementation feasible. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 article

Fabrication of Anodically Bonded Capacitive Micromachined Ultrasonic Transducers with Vacuum-Sealed Cavities

2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), pp. 604–607.

UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 conference paper

3D volumetric ultrasound imaging with a 32×32 CMUT array integrated with front-end ICs using flip-chip bonding technology

2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers. Presented at the 2013 IEEE International Solid-State Circuits Conference (ISSCC 2013).

By: A. Bhuyan*, J. Choe*, B. Lee*, I. Wygant*, A. Nikoozadeh*, O. Oralkan n, B. Khuri-Yakub*

Event: 2013 IEEE International Solid-State Circuits Conference (ISSCC 2013)

TL;DR: This paper presents a fully functional 3D ultrasound imaging system comprising a 32×32 2D CMUT array, 3D-stacked with front-end ICs using flip-chip bonding technology, capable of capturing real-time volumetric ultrasound data, and displaying 2D and3D ultrasound images. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 conference paper

A 32×32 integrated CMUT array for volumetric ultrasound imaging

2013 IEEE International Ultrasonics Symposium (IUS). Presented at the 2013 IEEE International Ultrasonics Symposium (IUS).

By: A. Bhuyan*, C. Chang*, J. Choe*, B. Lee*, A. Nikoozadeh*, O. Oralkan n, B. Khuri-Yakub*

Event: 2013 IEEE International Ultrasonics Symposium (IUS)

author keywords: 3D volumetric imaging; capacitive micromachined ultrasonic transducer (CMUT); 2D array; phased array imaging; ultrasound; real-time; flip-chip bonding; integrated circuits
TL;DR: This work presents a 3D imaging system using capacitive micromachined ultrasonic transducer (CMUT) technology that addresses many of the challenges in building such a system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 journal article

A comparison between conventional and collapse-mode capacitive micromachined ultrasonic transducers in 10-MHz 1-D arrays

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 60(6), 1245–1255.

By: K. Park*, O. Oralkan n & B. Khuri-Yakub*

MeSH headings : Equipment Design; Finite Element Analysis; Microtechnology / instrumentation; Transducers; Ultrasonography / instrumentation
TL;DR: Finite element analysis (FEA) shows that the collapse-mode CMUT has higher output pressure sensitivity than the conventional CMUT, and achieves a 3-dB fractional bandwidth (FBW) of 124% compared with 128% for the conventional mode. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2013 journal article

Dynamic Response of Model Lipid Membranes to Ultrasonic Radiation Force

PLoS ONE, 8(10), e77115.

Ed(s): W. Phillips

MeSH headings : Electric Capacitance; Hydrodynamics; Lipid Bilayers / radiation effects; Patch-Clamp Techniques; Ultrasonography
TL;DR: Synthetic lipid bilayers can be used to study the effects of ultrasound on cell membranes and membrane proteins, and the origin of the radiation force appears to reflect a direct interaction of ultrasound with the bilayer. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2013 journal article

GPU-Based Real-Time Volumetric Ultrasound Image Reconstruction for a Ring Array

IEEE Transactions on Medical Imaging, 32(7), 1258–1264.

By: J. Choe*, A. Nikoozadeh*, O. Oralkan n & B. Khuri-Yakub*

author keywords: Capacitive micromachined ultrasonic transducer (CMUT); graphics processing unit (GPU); maximum intensity projection (MIP); real-time imaging; ring array; ultrasound imaging; volumetric imaging
MeSH headings : Computer Graphics; Equipment Design; Image Processing, Computer-Assisted / methods; Phantoms, Imaging; Signal Processing, Computer-Assisted; Software; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: This paper develops graphics processing unit (GPU)-based, real-time image reconstruction software that exploits massive data-level parallelism in beamforming operations and presents the experimental images obtained using this software. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2013 conference paper

GPU-based real-time imaging software suite for medical ultrasound

2013 IEEE International Ultrasonics Symposium (IUS). Presented at the 2013 IEEE International Ultrasonics Symposium (IUS).

By: J. Choe*, A. Nikoozadeh*, O. Oralkan n & B. Khuri-Yakub*

Event: 2013 IEEE International Ultrasonics Symposium (IUS)

author keywords: Real-time imaging; Volumetric imaging; GPU; CMUT
TL;DR: A GPU-based real-time imaging software suite for medical ultrasound imaging is developed to provide a fast real- time imaging platform for various probe geometries and imaging schemes. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2013 chapter

Innovations in Ultrasound Instrumentation for Image Guidance

In Intraoperative Imaging and Image-Guided Therapy (pp. 163–171).

By: P. Khuri-Yakub*, Ö. Oralkan n & A. Nikoozadeh*

TL;DR: Capacitive micromachined ultrasonic transducer technology based on standard silicon microfabrication techniques can potentially produce devices that can address the clinical needs in ultrasound image guidance as demonstrated by integrated endoscopic 2-D arrays and intracardiac imaging catheters implemented using this technology. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2013 article

Integrated Circuits for Volumetric Ultrasound Imaging With 2-D CMUT Arrays

Bhuyan, A., Choe, J. W., Lee, B. C., Wygant, I. O., Nikoozadeh, A., Oralkan, O., & Khuri-Yakub, B. T. (2013, December). IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS, Vol. 7, pp. 796–804.

By: A. Bhuyan*, J. Choe*, B. Lee*, I. Wygant*, A. Nikoozadeh*, O. Oralkan n, B. Khuri-Yakub*

author keywords: 2D array; capacitive micromachined ultrasonic transducer (CMUT); flip-chip bonding; integrated circuits; phased array imaging; ultrasound; volumetric imaging
MeSH headings : Electronics, Medical / instrumentation; Humans; Imaging, Three-Dimensional; Male; Microtechnology / instrumentation; Models, Biological; Prostate / diagnostic imaging; Transducers; Ultrasonography / instrumentation
TL;DR: A 3-D imaging system using capacitive micromachined ultrasonic transducer (CMUT) technology that addresses many of the challenges in building such a system and demonstrates two approaches in integrating the transducers and the front-end electronics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Photoacoustic Imaging of the Bladder A Pilot Study

JOURNAL OF ULTRASOUND IN MEDICINE, 32(7), 1245–1250.

By: A. Kamaya*, S. Vaithilingam*, B. Chung*, O. Oralkan n & B. Khuri-Yakub*

author keywords: bladder cancer; bladder tumor depth; bladder tumor staging; noninvasive bladder cancer staging; optoacoustic imaging; photoacoustic imaging
MeSH headings : Algorithms; Animals; Elasticity Imaging Techniques / instrumentation; Elasticity Imaging Techniques / methods; Equipment Design; Equipment Failure Analysis; Image Enhancement / instrumentation; Image Enhancement / methods; Image Interpretation, Computer-Assisted / instrumentation; Image Interpretation, Computer-Assisted / methods; In Vitro Techniques; Phantoms, Imaging; Photoacoustic Techniques / instrumentation; Photoacoustic Techniques / methods; Pilot Projects; Reproducibility of Results; Sensitivity and Specificity; Swine; Urinary Bladder / diagnostic imaging; Urinary Bladder Neoplasms / diagnostic imaging
TL;DR: Photoacoustic imaging may be complementary to diagnostic information obtained by cystoscopy and urine cytologic analysis and could potentially obviate the need for biopsy in some tumors before definitive treatment. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Precise Neural Stimulation in the Retina Using Focused Ultrasound

Journal of Neuroscience, 33(10), 4550–4560.

By: M. Menz*, O. Oralkan*, P. Khuri-Yakub* & S. Baccus*

MeSH headings : Ambystoma; Animals; Biophysics; Cadmium Chloride / pharmacology; Female; In Vitro Techniques; Male; Membrane Potentials / drug effects; Membrane Potentials / physiology; Membrane Potentials / radiation effects; Neurons / drug effects; Neurons / physiology; Neurons / radiation effects; Photic Stimulation; Retina / cytology; Sound; Visual Pathways / drug effects; Visual Pathways / physiology; Visual Pathways / radiation effects
TL;DR: It is concluded that ultrasonic stimulation is an effective and spatiotemporally precise method to activate the retina and may have diagnostic potential to probe remaining retinal function in cases of photoreceptor degeneration and therapeutic potential for use in a retinal prosthesis. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2012 journal article

Deep Tissue Photoacoustic Imaging Using a Miniaturized 2-D Capacitive Micromachined Ultrasonic Transducer Array

IEEE Transactions on Biomedical Engineering, 59(5), 1199–1204.

By: S. Kothapalli*, T. Ma*, S. Vaithilingam*, O. Oralkan n, B. Khuri-Yakub* & S. Gambhir*

author keywords: Capacitive micromachined ultrasound transducer (CMUT) array; deep tissue imaging; optoacoustic; photoacoustic
MeSH headings : Animals; Chickens; Hair / chemistry; Horses; Miniaturization; Muscle, Skeletal / chemistry; Phantoms, Imaging; Photoacoustic Techniques / instrumentation; Photoacoustic Techniques / methods; Transducers; Ultrasonography / instrumentation
TL;DR: 3-D photoacoustic imaging of light absorbing objects embedded as deep as 5 cm inside strong optically scattering phantoms using a miniaturized CMUT array of 16 × 16 elements shows that CMUTs with integrated front-end amplifier circuits are an attractive choice for achieving relatively high depth sensitivity for PAI. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2012 journal article

First In Vivo Use of a Capacitive Micromachined Ultrasound Transducer Array-Based Imaging and Ablation Catheter

Journal of Ultrasound in Medicine, 31(2), 247–256.

By: D. Stephens*, U. Truong*, A. Nikoozadeh*, Ö. Oralkan*, C. Seo*, J. Cannata*, A. Dentinger*, K. Thomenius* ...

author keywords: ablation; capacitive micromachined ultrasound transducer; electroanatomic mapping; electrophysiology; intracardiac echocardiography; intracardiac imaging; microelectromechanical system; thermal strain
MeSH headings : Animals; Cardiac Catheterization / instrumentation; Catheter Ablation / instrumentation; Echocardiography / instrumentation; Electrophysiologic Techniques, Cardiac / instrumentation; Equipment Design; Fluoroscopy; Swine; Transducers; Ultrasonography, Interventional / instrumentation
TL;DR: In vivo for the first time the general operation of a new multifunctional intracardiac echocardiography catheter constructed with a microlinear capacitive micromachined ultrasound transducer (ML‐CMUT) imaging array was test in vivo. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2012 conference paper

Photoacoustic imaging using a 9F microLinear CMUT ICE catheter

2012 IEEE International Ultrasonics Symposium. Presented at the 2012 IEEE International Ultrasonics Symposium.

By: A. Nikoozadeh*, J. Choe*, S. Kothapalli*, A. Moini*, S. Sanjani*, A. Kamaya*, O. Oralkan n, S. Gambhir*, P. Khuri-Yakub*

Event: 2012 IEEE International Ultrasonics Symposium

author keywords: photoacoustic; ultrasound; catheter; real-time; intracardiac echocardiography; forward-looking; capacitive micromachined ultrasonic transducers; CMUT
TL;DR: The promising phantom and in vivo imaging results presented here demonstrate the utility of a fully integrated catheter that provides both anatomical and functional information through co-registered ultrasound and photoacoustic imaging capabilities. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2012 journal article

Ultrasound-Induced Currents in Planar Lipid Blayers: Origins and Potential Physiological Significance

Biophysical Journal, 102(3), 34a.

By: M. Prieto*, O. Oralkan*, B. Khuri-Yakub* & M. Maduke*

TL;DR: It is suggested that changes in ultrasound intensity during the rise time of the pulse may be important in determining the response to ultrasound in vivo, and is consistent with the observation that pulsed ultrasound is more effective than continuous ultrasound in modulating neural activity. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 10, 2020

2012 journal article

Volumetric real-time imaging using a CMUT ring array

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 59(6), 1201–1211.

By: J. Choe*, O. Oralkan n, A. Nikoozadeh*, M. Gencel*, D. Stephens*, M. O'Donnell*, D. Sahn*, B. Khuri-Yakub*

MeSH headings : Animals; Chickens; Computer Simulation; Echocardiography; Equipment Design; Image Processing, Computer-Assisted / methods; Phantoms, Imaging; Signal-To-Noise Ratio; Transducers; Ultrasonography / instrumentation
TL;DR: The results show that SPA with Hadamard coding and aperture weighting is a good option for ring-array imaging, which achieves better image resolution and comparable signal-tonoise ratio at a much faster image acquisition rate. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 journal article

Capacitive micromachined ultrasonic transducer (CMUT) as a chemical sensor for DMMP detection

Sensors and Actuators B: Chemical, 160(1), 1120–1127.

author keywords: Capacitive micromachined ultrasonic transducer; CMUT; MEMS resonator; Chemical sensor
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 journal article

Capacitive micromachined ultrasonic transducers for medical imaging and therapy

Journal of Micromechanics and Microengineering, 21(5), 054004.

TL;DR: The presented results prove the CMUT as a micro-electro-mechanical systems technology for many medical diagnostic and therapeutic applications. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2011 journal article

Chemical Vapor Detection Using a Capacitive Micromachined Ultrasonic Transducer

Analytical Chemistry, 83(24), 9314–9320.

Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 conference paper

Comparison of conventional and collapse-mode CMUT in 1-D array configuration

2011 IEEE International Ultrasonics Symposium. Presented at the 2011 IEEE International Ultrasonics Symposium (IUS).

By: K. Park*, O. Oralkan* & B. Khuri-Yakub*

Event: 2011 IEEE International Ultrasonics Symposium (IUS)

author keywords: CMUT; Collapse-mode; LOCOS; MEMS
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 conference paper

Interdigitated annular CMUT arrays for ultrasound assisted delivery of fluorescent contrast agents

2011 IEEE International Ultrasonics Symposium. Presented at the 2011 IEEE International Ultrasonics Symposium (IUS).

By: P. Cristman*, O. Oralkan*, M. Mandella*, O. Solgaard*, C. Contag* & B. Khuri-Yakub*

Event: 2011 IEEE International Ultrasonics Symposium (IUS)

TL;DR: A circularly symmetric interdigitated capacitive micromachined ultrasonic transducer is investigated for improved delivery of fluorescent contrast agents to be imaged by a miniature dual axis confocal microscope for improved in vivo imaging. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 chapter

Intracardiac Forward-Looking Ultrasound Imaging Catheters Using Capacitive Micromachined Ultrasonic Transducers

In Acoustical Imaging (pp. 203–210).

By: A. Nikoozadeh*, I. Wygant*, D. Lin*, Ö. Oralkan*, K. Thomenius*, A. Dentinger*, D. Wildes*, G. Akopyan* ...

TL;DR: Forward-viewing ultrasound imaging catheters based on two types of transducer arrays using the capacitive micromachined ultrasonic transducing technology are developed, demonstrating ex-vivo images of the left atrial appendage in an isolated Langendorff-perfused rabbit heart model and in-viva images of heart through the open chest in a porcine animal model. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 conference paper

Miniaturized, wearable, ultrasound probe for on-demand ultrasound screening

2011 IEEE International Ultrasonics Symposium. Presented at the 2011 IEEE International Ultrasonics Symposium (IUS).

By: A. Bhuyan*, J. Choe*, B. Lee*, P. Cristman*, O. Oralkan* & B. Khuri-Yakub*

Event: 2011 IEEE International Ultrasonics Symposium (IUS)

author keywords: low profile; wearable; portable; CMUT; ultrasound; capacitive micromachined ultrasonic transducer; real-time
TL;DR: A low profile, wearable ultrasound probe that can be taped onto the patient's body for periodic or constant monitoring of organ functions and provided with comparable image quality to that of the commercial probe. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 conference paper

Real-time volumetric imaging system for CMUT arrays

2011 IEEE International Ultrasonics Symposium. Presented at the 2011 IEEE International Ultrasonics Symposium (IUS).

By: J. Choe*, O. Oralkan*, A. Nikoozadeh*, A. Bhuyan*, B. Lee*, M. Gence*, B. Khuri-Yakub*

Event: 2011 IEEE International Ultrasonics Symposium (IUS)

author keywords: CMUT; Real-time imaging; Volumetric imaging; Ring array; 2-D array
TL;DR: A flexible real-time volumetric ultrasound imaging system for capacitive micromachined ultrasonic transducer (CMUT) arrays, consisting of an ultrasound data acquisition system, an FPGA board, and a host PC, which works with arbitrary-shaped CMUT arrays and non-standard beamforming methods. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 conference paper

Regulating energy delivery during intracardiac radiofrequency ablation using thermal strain imaging

2011 IEEE International Ultrasonics Symposium. Presented at the 2011 IEEE International Ultrasonics Symposium (IUS).

By: C. Hyung Seo*, D. Stephens*, J. Cannata*, A. Dentinger*, F. Lin*, S. Park*, D. Wildes*, K. Thomenius* ...

Event: 2011 IEEE International Ultrasonics Symposium (IUS)

TL;DR: Temperature validation for this method in-vivo using an integrated intracardiac echocardiography (ICE) probe is presented and preliminary results on thermal strain imaging using a cMUT array integrated into the ICE probe are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2011 journal article

The feasibility of using thermal strain imaging to regulate energy delivery during intracardiac radio-frequency ablation

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 58(7), 1406–1417.

By: C. Seo*, D. Stephens*, J. Cannata*, A. Dentinger*, F. Lin, S. Park*, D. Wildes*, K. Thomenius* ...

MeSH headings : Animals; Cardiac Surgical Procedures / methods; Catheter Ablation / adverse effects; Catheter Ablation / methods; Echocardiography / methods; Feasibility Studies; Hot Temperature; Intraoperative Complications / prevention & control; Myocardium / cytology; Signal Processing, Computer-Assisted; Swine
TL;DR: This work proposes a potential tool to detect the moment when tissue damage occurs by using the reduced slope in the thermal strain curve as a function of heating time, and illustrated the feasibility of this method initially using porcine myocardium in vitro. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 9, 2019

2011 conference paper

Volumetric intracardiac imaging using a fully integrated CMUT ring array: Recent developments

2011 IEEE International Ultrasonics Symposium. Presented at the 2011 IEEE International Ultrasonics Symposium (IUS).

By: A. Moini*, A. Nikoozadeh*, O. Oralkan*, J. Choe*, A. Sarioglu*, D. Stephens*, A. de la Rama*, P. Chen* ...

Event: 2011 IEEE International Ultrasonics Symposium (IUS)

author keywords: electrophysiology; ultrasound; capacitive micromachined ultrasonic transducer; CMUT; intracardiac echo; real-time; volumetric; forward-looking
TL;DR: The in vivo, volumetric, real-time imaging capability of the finalized Ring catheter in a pig heart is demonstrated using a PC-based imaging platform from Verasonics and a commercial Vivid7 imaging system. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

3-D Deep penetration photoacoustic imaging with a 2-D CMUT array

2010 IEEE International Ultrasonics Symposium. Presented at the 2010 IEEE Ultrasonics Symposium (IUS).

By: T. Ma*, S. Kothapalli*, S. Vaithilingam*, O. Oralkan*, A. Kamaya*, I. Wygant*, X. Zhuang*, S. Gambhir* ...

Event: 2010 IEEE Ultrasonics Symposium (IUS)

TL;DR: 3-D photoac acoustic imaging of optically absorbing targets embedded as deep as 5 cm inside a highly scattering background medium using a 2-D capacitive micromachined ultrasonic transducer (CMUT) array with a center frequency of 5.5 MHz makes the CMUT a promising technology for deep tissue photoacoustic imaging. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Design optimization for a 2-D sparse transducer array for 3-D ultrasound imaging

2010 IEEE International Ultrasonics Symposium. Presented at the 2010 IEEE Ultrasonics Symposium (IUS).

By: J. Choe*, O. Oralkan* & P. Khuri-Yakub*

Event: 2010 IEEE Ultrasonics Symposium (IUS)

TL;DR: The method of simulated annealing is used to find the optimal configuration of a 2-D sparse array to minimize the value of an objective function defined as the energy ratio between the non-focal and focal regions in the point spread function (PSF). (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Forward-looking intracardiac imaging catheters using fully integrated CMUT arrays

2010 IEEE International Ultrasonics Symposium. Presented at the 2010 IEEE Ultrasonics Symposium (IUS).

By: A. Nikoozadeh*, O. Oralkan*, M. Gencel*, J. Choe*, D. Stephens*, A. de la Rama*, P. Chen*, F. Lin* ...

Event: 2010 IEEE Ultrasonics Symposium (IUS)

TL;DR: This work has successfully prototyped the first CMUT-based ICE catheters and proven the capabilities of the CMUT technology for implementing high-frequency miniature transducer arrays with integrated electronics. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Highly sensitive detection of DMMP using a CMUT-based chemical sensor

2010 IEEE Sensors. Presented at the 2010 Ninth IEEE Sensors Conference (SENSORS 2010).

By: H. Lee*, K. Park*, M. Kupnik*, O. Oralkan* & B. Khuri-Yakub*

Event: 2010 Ninth IEEE Sensors Conference (SENSORS 2010)

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Miniaturized ultrasound imaging probes enabled by CMUT arrays with integrated frontend electronic circuits

2010 Annual International Conference of the IEEE Engineering in Medicine and Biology. Presented at the 2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2010).

By: B. Khuri-Yakub*, O. Oralkan*, A. Nikoozadeh*, I. Wygant*, S. Zhuang*, M. Gencel*, J. Choe*, D. Stephens* ...

Event: 2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC 2010)

MeSH headings : Animals; Catheterization; Electrocardiography; Electronics, Medical / instrumentation; Imaging, Three-Dimensional / instrumentation; Microtechnology / instrumentation; Phantoms, Imaging; Sus scrofa; Transducers; Ultrasonics / instrumentation
TL;DR: This paper presents examples of miniaturized CMUT probes utilizing 1D, 2D, and ring arrays with integrated electronics for intravascular, intracardiac, and endoscopic applications. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Monitoring radiofrequency catheter ablation using thermal strain imaging

2010 IEEE International Ultrasonics Symposium. Presented at the 2010 IEEE Ultrasonics Symposium (IUS).

By: C. Seo*, D. Stephens*, J. Cannata*, A. Dentinger*, F. Lin, S. Park, D. Wildes*, K. Thomenius* ...

Event: 2010 IEEE Ultrasonics Symposium (IUS)

TL;DR: A potential tool to detect the moment when tissue damage occurs using the reduced slope in the thermal strain curve as a function of heating time is proposed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Packaging of large and low-pitch size 2D ultrasonic transducer arrays

Proceedings of the 2010 IEEE 23rd International Conference on Micro Electro Mechanical Systems (MEMS), 508–511.

By: D. Lin*, X. Zhuang*, R. Wodnicki*, C. Woychik*, M. Kupnik*, Ö. Oralkan*, B. Khuri-Yakub*

Event: 23rd IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2010)

Sources: Crossref, NC State University Libraries
Added: April 24, 2019

2010 conference paper

Simulating capacitive micromachined ultrasonic transducers (CMUTs) using field II

2010 IEEE International Ultrasonics Symposium. Presented at the 2010 International Ultrasonics Symposium.

Event: 2010 International Ultrasonics Symposium

TL;DR: It is shown that rectangular array elements, populated with cells, can be well approximated by neglecting the cells and it is demonstrated that scaling of the SIR translates into better computational efficiency. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Ultrasound compatible RF ablation electrode design for catheter based guidance of RF ablation — In vivo results with thermal strain imaging

2010 IEEE International Ultrasonics Symposium. Presented at the 2010 International Ultrasonics Symposium.

By: D. Stephens*, J. Cannata*, C. Seo*, J. Jeong*, E. Sun, W. Cao, A. Nikoozadeh*, O. Oralkan* ...

Event: 2010 International Ultrasonics Symposium

TL;DR: In vivo use of the "MicroLinear" forward imaging ultrasound catheter design has shown for the first time the very substantial potential for a single, low profile catheter to simultaneously image within the heart and perform intracardiac ablation therapy with tissue temperature guidance produced from the incorporation of TS imaging. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2010 conference paper

Zero-bias resonant sensor with an oxide-nitride layer as charge trap

2010 IEEE Sensors. Presented at the 2010 Ninth IEEE Sensors Conference (SENSORS 2010).

Event: 2010 Ninth IEEE Sensors Conference (SENSORS 2010)

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 conference paper

A 2D CMUT hydrophone array: Characterization results

2009 IEEE International Ultrasonics Symposium. Presented at the 2009 IEEE International Ultrasonics Symposium.

By: P. Cristman*, O. Oralkan*, X. Zhuang*, T. Ma*, S. Vaithilingam*, T. Carver*, I. Wygant*, B. Khuri-Yakub*

Event: 2009 IEEE International Ultrasonics Symposium

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 conference paper

A Low-Noise Oscillator based on a Multi-Membrane CMUT for High Sensitivity Resonant Chemical Sensors

2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems. Presented at the 2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems (MEMS).

By: H. Lee*, K. Park*, P. Cristman*, O. Oralkan*, M. Kupnik* & B. Khuri-Yakub*

Event: 2009 IEEE 22nd International Conference on Micro Electro Mechanical Systems (MEMS)

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 conference paper

A family of intracardiac ultrasound imaging devices designed for guidance of electrophysiology ablation procedures

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Presented at the 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

By: D. Sahn*, D. Stephens*, J. Cannata*, K. Kirk Shung*, O. Oralkan*, A. Nikoozadeh*, B. Khuri-Yakub*, H. Nguyen* ...

Event: 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

MeSH headings : Adult; Aged; Animals; Atrial Fibrillation / diagnostic imaging; Atrial Fibrillation / epidemiology; Body Surface Potential Mapping / instrumentation; Cardiac Catheterization / instrumentation; Cardiac Catheterization / methods; Electrophysiologic Techniques, Cardiac; Equipment Design; Heart Atria / diagnostic imaging; Humans; Middle Aged; Models, Animal; Pulmonary Veins / diagnostic imaging; Swine; Ultrasonography, Interventional / classification; Ultrasonography, Interventional / instrumentation; United States / epidemiology
TL;DR: The authors' Bioengineering Research Partnership grant, ldquoHigh Frequency Ultrasound Arrays for Cardiac Imagingrdquo, is in its sixth year of NIH funding, having proposed to develop a family of high frequency miniaturized forward and side-looking ultrasound imaging devices equipped with electrophysiology mapping and localization sensors. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

An integrated circuit with transmit beamforming flip-chip bonded to a 2-D CMUT array for 3-D ultrasound imaging

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 56(10), 2145–2156.

By: I. Wygant*, N. Jamal*, H. Lee*, A. Nikoozadeh*, O. Oralkan*, M. Karaman*, B. Khuri-yakub*

MeSH headings : Echocardiography; Electronics, Medical / instrumentation; Equipment Design; Imaging, Three-Dimensional / instrumentation; Imaging, Three-Dimensional / methods; Phantoms, Imaging; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: It is shown that the IC can produce steered and focused ultrasound beams, and a combined IC and transducer array can lead to a portable, high-performance, and inexpensive 3-D ultrasound imaging system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2009 conference paper

Challenges of solder bumping capacitive micro-machined ultrasonic transducer (cMUT) trenched devices

Proceedings of SMTA International Conference & Exhibition, 1–11.

By: C. Woychik, R. Wodnicki, T. Fritzsch, O. Ehrmann, R. Jordan, V. Glaw, R. Fisher, K. Thomenius ...

Source: NC State University Libraries
Added: April 24, 2019

2009 conference paper

Enhanced sensitivity carbon nanotubes as targeted photoacoustic molecular imaging agents

In A. A. Oraevsky & L. V. Wang (Eds.), Photons Plus Ultrasound: Imaging and Sensing 2009.

By: A. de la Zerda*, Z. Liu*, C. Zavaleta*, S. Bodapati*, R. Teed*, S. Vaithilingam*, T. Ma*, O. Oralkan* ...

Ed(s): A. Oraevsky & L. Wang

Event: SPIE BiOS: Biomedical Optics

TL;DR: This work lays the foundations for future in-vivo studies that will use the SWNT-ICG particles as imaging agents administered systemically, and shows great promise for high sensitivity photoacoustic imaging of molecular targets in- vivo. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

Experimental Studies With a 9F Forward-Looking Intracardiac Imaging and Ablation Catheter

Journal of Ultrasound in Medicine, 28(2), 207–215.

By: D. Stephens*, M. O'Donnell*, K. Thomenius*, A. Dentinger*, D. Wildes*, P. Chen*, K. Shung*, J. Cannata* ...

author keywords: ablation; electrophysiology; interventional guidance; intracardiac ultrasound array; miniaturized
MeSH headings : Animals; Catheter Ablation / instrumentation; Catheter Ablation / methods; Echocardiography / instrumentation; Echocardiography / methods; Equipment Design; Equipment Failure Analysis; Heart Atria / diagnostic imaging; Heart Atria / surgery; Heart Ventricles / diagnostic imaging; Heart Ventricles / surgery; Reproducibility of Results; Sensitivity and Specificity; Swine; Transducers
TL;DR: The forward‐looking intracardiac catheter has been adapted to work easily on an existing commercial imaging platform with very minor software modifications and is capable of both low‐artifact ablation imaging on a standard clinical imaging system and high–frame rate myocardial wall strain rate imaging for detecting changes in cardiac mechanics associated with ablation. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2009 conference paper

Forward-looking volumetric intracardiac imaging using a fully integrated CMUT ring array

2009 IEEE International Ultrasonics Symposium. Presented at the 2009 IEEE International Ultrasonics Symposium.

By: A. Nikoozadeh*, O. Oralkan*, M. Gencel*, J. Choe*, D. Stephens*, A. de la Rama*, P. Chen*, K. Thomenius* ...

Event: 2009 IEEE International Ultrasonics Symposium

TL;DR: The presented experimental results demonstrate the performance of the forward-looking volumetric intracardiac imaging approach and acquire a PC-based real-time imaging platform and demonstrated real- time imaging with the ring array. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

Minimally Redundant 2-D Array Designs for 3-D Medical Ultrasound Imaging

IEEE Transactions on Medical Imaging, 28(7), 1051–1061.

By: M. Karaman*, I. Wygant*, O. Oralkan* & B. Khuri-Yakub*

author keywords: Beamforming; biomedical ultrasonics; image reconstruction; phased arrays; ultrasonic imaging
MeSH headings : Algorithms; Computer Simulation; Image Processing, Computer-Assisted / methods; Imaging, Three-Dimensional / methods; Transducers; Ultrasonography / methods
TL;DR: Four reduced redundancy 2-D array configurations for miniature 3-D ultrasonic imaging systems are explored and theoretical and simulated point spread functions of the array configurations are presented along with quantitative comparison in terms of the front-end complexity and image quality. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2009 conference paper

Multi-row linear cMUT array using cMUTs and multiplexing electronics

2009 IEEE International Ultrasonics Symposium. Presented at the 2009 IEEE International Ultrasonics Symposium.

By: R. Wodnicki*, C. Woychik*, A. Byun*, R. Fisher*, K. Thomenius*, D. Lin*, X. Zhuang*, O. Oralkan* ...

Event: 2009 IEEE International Ultrasonics Symposium

TL;DR: The challenges of trenched cMUT attach to a laminate interposer as part of aTileable module will be discussed and the architecture of the tileable module build-up for manufacturability, reliability, acoustic planarity, and reduced spacing between tiles and cM UT chips will be addressed. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

Next-gen ultrasound

IEEE Spectrum, 46(5), 44–54.

By: B. Khuri-yakub, O. Oralkan* & M. Kupnik

TL;DR: Pregnant ultrasound images serve a serious purpose and can prove immensely important, as when they allow doctors to diagnose and sometimes even repair a congenital malformation while the baby is still in the womb. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2009 conference paper

Photoacoustic molecular imaging using single walled carbon nanotubes in living mice

In A. A. Oraevsky & L. V. Wang (Eds.), Photons Plus Ultrasound: Imaging and Sensing 2009.

By: A. de la Zerda*, C. Zavaleta*, S. Keren*, S. Vaithilingam*, S. Bodapati*, R. Teed*, Z. Liu*, J. Levi* ...

Ed(s): A. Oraevsky & L. Wang

Event: SPIE BiOS: Biomedical Optics

TL;DR: The utility of single walled carbon nanotubes (SWNTs) as targeted imaging agents in living mice bearing tumor xenografts is demonstrated for the first time. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2009 journal article

Three-dimensional photoacoustic imaging using a two-dimensional CMUT array

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 56(11), 2411–2419.

By: S. Vaithilingam*, T. Ma*, Y. Furukawa*, I. Wygant*, X. Zhuang*, A. De La Zerda*, O. Oralkan*, A. Kamaya* ...

MeSH headings : Computer-Aided Design; Elasticity Imaging Techniques / instrumentation; Equipment Design; Equipment Failure Analysis; Feasibility Studies; Imaging, Three-Dimensional / instrumentation; Reproducibility of Results; Sensitivity and Specificity; Transducers
TL;DR: Using a 2-D array of capacitive micromachined ultrasonic transducers (CMUTs) to perform 3-D photoacoustic and acoustic imaging using a tunable optical parametric oscillator laser system that generates nanosecond laser pulses was used to induce the photoac acoustic signals. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2009 journal article

Wafer-bonded 2-D CMUT arrays incorporating through-wafer trench-isolated interconnects with a supporting frame

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 56(1), 182–192.

By: X. Zhuang, I. Wygant*, D. Lin, M. Kupnik*, O. Oralkan* & B. Khuri-Yakub*

MeSH headings : Air; Electric Impedance; Equipment Design; Fourier Analysis; Micro-Electrical-Mechanical Systems / instrumentation; Phantoms, Imaging; Silicon / chemistry; Soybean Oil / chemistry; Transducers; Ultrasonography / instrumentation
TL;DR: This study shows that through-wafer trench-isolation with a supporting frame is a viable solution for providing electrical interconnects to CMUT elements and that 2-D arrays fabricated using wafer-bonding deliver good performance. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2008 conference paper

CMUT as a chemical sensor for DMMP detection

2008 IEEE International Frequency Control Symposium. Presented at the 2008 IEEE International Frequency Control Symposium.

By: H. Lee*, K. Park*, O. Oralkan*, M. Kupnik* & B. Khuri-Yakub*

Event: 2008 IEEE International Frequency Control Symposium

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 conference paper

Capacitive micromachined ultrasonic transducer as a chemical sensor

2008 IEEE Sensors. Presented at the 2008 IEEE Sensors.

By: K. Park*, H. Lee*, M. Kupnik*, O. Oralkan* & B. Khuri-Yakub*

Event: 2008 IEEE Sensors

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 journal article

Carbon nanotubes as photoacoustic molecular imaging agents in living mice

Nature Nanotechnology, 3(9), 557–562.

By: A. De La Zerda*, C. Zavaleta*, S. Keren*, S. Vaithilingam*, S. Bodapati*, Z. Liu*, J. Levi*, B. Smith* ...

MeSH headings : Acoustics / instrumentation; Animals; Contrast Media / administration & dosage; Diagnostic Imaging / instrumentation; Diagnostic Imaging / methods; Mice; Mice, Nude; Nanotubes, Carbon; Neoplasms, Experimental / pathology; Sensitivity and Specificity; Spectrum Analysis, Raman / methods
TL;DR: It is shown that single-walled carbon nanotubes conjugated with cyclic Arg-Gly-Asp (RGD) peptides can be used as a contrast agent for photoacoustic imaging of tumours and intravenous administration showed eight times greater photoac acoustic signal in the tumour than mice injected with non-targeted nanot tubes. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2008 conference paper

Development of nanoparticle-based gold contrast agent for photoacoustic tomography

Technical Proceedings of NSTI Nanotech, 1, 708–711.

By: Y. Yang, S. Vaithilingam, T. Ma, S. Salehi-Had, Ö. Oralkan, B. Khuri-Yakub, S. Guccione

Source: NC State University Libraries
Added: April 21, 2019

2008 conference paper

Fabricating capacitive micromachined ultrasonic transducers with direct wafer-bonding and LOCOS technology

2008 IEEE 21st International Conference on Micro Electro Mechanical Systems. Presented at the 2008 IEEE 21st International Conference on Micro Electro Mechanical Systems.

By: K. Park*, H. Lee*, M. Kupnik*, O. Oralkan* & B. Khuri-Yakub

Event: 2008 IEEE 21st International Conference on Micro Electro Mechanical Systems

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 journal article

Fabrication of Flexible Transducer Arrays With Through-Wafer Electrical Interconnects Based on Trench Refilling With PDMS

Journal of Microelectromechanical Systems, 17(2), 446–452.

By: X. Zhuang*, D. Lin*, O. Oralkan* & B. Khuri-Yakub*

author keywords: capacitive micromachined ultrasonic transducer (CMUT); fabrication; flexible arrays; intravascular ultrasound (IVUS); polydimethylsiloxane (PDMS); through-wafer interconnects; trench isolation
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2008 journal article

Forward-looking intracardiac ultrasound imaging using a 1-D CMUT array integrated with custom front-end electronics

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 55(12), 2651–2660.

By: A. Nikoozadeh*, I. Wygant*, D. Lin*, O. Oralkan*, A. Ergun*, D. Stephens*, K. Thomenius*, A. Dentinger* ...

MeSH headings : Animals; Cardiac Catheterization / instrumentation; Echocardiography / instrumentation; Electronics / instrumentation; Electrophysiologic Techniques, Cardiac / instrumentation; Equipment Design; Humans; Image Interpretation, Computer-Assisted / instrumentation; Phantoms, Imaging; Rabbits; Transducers; Ultrasonography / instrumentation
TL;DR: This work fabricates a 24-element, fine-pitch 1-D array of capacitive micromachined ultrasonic transducers, designed to be mounted at the tip of a 10-Fr catheter for high-frame-rate forward-looking intracardiac imaging, and designs a custom integrated circuit (IC) composed of 24 identical blocks of transmit/ receive circuitry. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2008 journal article

Integration of 2D CMUT arrays with front-end electronics for volumetric ultrasound imaging

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 55(2), 327–342.

By: I. Wygant*, X. Zhuang*, D. Yeh*, O. Oralkan*, A. Ergun*, M. Karaman*, B. Khuri-Yakub*

MeSH headings : Algorithms; Electronics, Medical / instrumentation; Equipment Design; Equipment Failure Analysis; Image Enhancement / instrumentation; Image Enhancement / methods; Image Interpretation, Computer-Assisted / instrumentation; Image Interpretation, Computer-Assisted / methods; Imaging, Three-Dimensional / instrumentation; Imaging, Three-Dimensional / methods; Reproducibility of Results; Sensitivity and Specificity; Signal Processing, Computer-Assisted; Systems Integration; Transducers; Ultrasonography / instrumentation
TL;DR: Combining the transducers array and IC allows for better utilization of large arrays, improves receive sensitivity, and may lead to new imaging techniques that depend on transducer arrays that are closely coupled to IC electronics. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2008 conference paper

Investigating large 2D arrays for photoacoustic and acoustic imaging using CMUT technology

2008 IEEE Ultrasonics Symposium. Presented at the 2008 IEEE Ultrasonics Symposium (IUS).

By: S. Vaithilingam*, T. Ma*, Y. Furukawa*, O. Oralkan*, A. Kamaya*, K. Torashima*, M. Kupnik*, I. Wygant* ...

Event: 2008 IEEE Ultrasonics Symposium (IUS)

TL;DR: Using a large aperture (64 times 64 element array) to perform photoacoustic and acoustic imaging by mechanically scanning a smaller array of capacitive micromachined ultrasonic transducers (CMUTs) is investigated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
14. Life Below Water (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 speech

Miniaturized chemical sensor array for detection of warfare agents

Park, K. K., Lee, H. J., Kupnik, M., Oralkan, Ö., & Khuri-Yakub, B. T. (2008, May). Presented at the 8th International Symposium on Technology and the Mine Problem Naval Postgraduate School, Monterey, CA.

By: K. Park, H. Lee, M. Kupnik, Ö. Oralkan & B. Khuri-Yakub

Event: 8th International Symposium on Technology and the Mine Problem Naval Postgraduate School at Monterey, CA on May 6-8, 2008

Source: NC State University Libraries
Added: April 24, 2019

2008 journal article

Multifunctional catheters combining intracardiac ultrasound imaging and electrophysiology sensing

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 55(7), 1570–1581.

By: D. Stephens*, J. Cannata*, R. Liu*, J. Zhao*, K. Shung*, H. Nguyen, R. Chia, A. Dentinger* ...

MeSH headings : Animals; Body Surface Potential Mapping / instrumentation; Body Surface Potential Mapping / methods; Cardiac Catheterization / instrumentation; Cardiac Catheterization / methods; Echocardiography / instrumentation; Equipment Design; Equipment Failure Analysis; Image Enhancement / instrumentation; Image Enhancement / methods; Imaging, Three-Dimensional / instrumentation; Imaging, Three-Dimensional / methods; Reproducibility of Results; Sensitivity and Specificity; Swine; Systems Integration; Transducers; Ultrasonography, Interventional / instrumentation
TL;DR: To establish the catheters' ability for integration with EP interventional procedures, tests were performed in vivo in a porcine animal model to demonstrate both useful intracardiac echocardiographic visualization and simultaneous 3-D positional information using integrated electroanatomical mapping techniques. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2008 conference paper

Optimum design of circular CMUT membranes for high quality factor in air

2008 IEEE Ultrasonics Symposium. Presented at the 2008 IEEE Ultrasonics Symposium (IUS).

By: K. Park*, H. Lee*, P. Crisman*, M. Kupnik*, O. Oralkan* & B. Khuri-Yakub*

Event: 2008 IEEE Ultrasonics Symposium (IUS)

author keywords: CMUT; Quality factor; Air damping; Circular membrane
TL;DR: The optimum aspect ratio of membrane exists for maximum quality factor of CMUT, and the optimum design of circular membrane for high quality factor is presented. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 conference paper

The effect of parallelism of CMUT cells on phase noise for chem/bio sensor applications

2008 IEEE Ultrasonics Symposium. Presented at the 2008 IEEE Ultrasonics Symposium (IUS).

By: H. Lee*, K. Park*, P. Cristman*, O. Oralkan*, M. Kupnik* & B. Khuri-Yakub*

Event: 2008 IEEE Ultrasonics Symposium (IUS)

author keywords: multiresonators; phase noise; resonant chemical sensors; CMUT
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2008 chapter

Ultrasonic Transduction

In Comprehensive Microsystems (pp. 517–539).

By: B. Khuri-Yakub*, A. Ergun*, O. Oralkan* & G. Yaralioglu*

Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2007 conference paper

10C-6 Fully Integrated CMUT-Based Forward-Looking Intracardiac Imaging for Electrophysiology

2007 IEEE Ultrasonics Symposium Proceedings. Presented at the 2007 IEEE Ultrasonics Symposium.

By: A. Nikoozadeh*, I. Wygant*, D. Lin*, O. Oralkan*, A. Ergun*, K. Thomenius*, A. Dentinger*, D. Wildes* ...

Event: 2007 IEEE Ultrasonics Symposium

author keywords: forward looking; electrophysiology; intracardiac echo; guidance; ultrasound; capacitive micromachined ultrasonic transducers; CMUT
TL;DR: The final goal is to integrate the CMUT array and the front-end electronics at the tip of a 10 -F catheter, which is developing a forward-looking intracardiac ultrasound imaging catheter. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 conference paper

2C-3 An Integrated Circuit with Transmit Beamforming and Parallel Receive Channels for 3D Ultrasound Imaging: Testing and Characterization

2007 IEEE Ultrasonics Symposium Proceedings. Presented at the 2007 IEEE Ultrasonics Symposium Proceedings.

By: I. Wygant*, N. Jamal*, H. Lee*, A. Nikoozadeh*, X. Zhuang*, O. Oralkan*, A. Ergun*, M. Karaman*, B. Khuri-Yakub*

Event: 2007 IEEE Ultrasonics Symposium Proceedings

TL;DR: An IC for 3D intracavital imaging that requires few electrical connections but uses a large fraction of a 16times16-element 2D transducer array to transmit focused ultrasound. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 conference paper

A co-axial scanning acoustic and photoacoustic microscope

Proceedings of the IEEE Ultrasonics Symposium, 2413–2416.

By: S. Vaithilingam, T. Ma, Y. Furukawa, A. Zerda, Ö. Oralkan, A. Kamaya, S. Keren, S. Gambhir, R. Jeffrey, B. Khuri-Yakub

Source: NC State University Libraries
Added: April 21, 2019

2007 journal article

Capacitive micromachined ultrasonic transducers for chemical detection in nitrogen

Applied Physics Letters, 91(9), 094102.

By: K. Park*, H. Lee*, G. Yaralioglu*, A. Ergun*, Ö. Oralkan*, M. Kupnik*, C. Quate*, B. Khuri-Yakub* ...

UN Sustainable Development Goal Categories
6. Clean Water and Sanitation (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2007 conference paper

Design of HIFU CMUT Arrays for Treatment of Liver and Renal Cancer

AIP Conference Proceedings. Presented at the 6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND.

By: S. Wong, A. Ergun, G. Yaralioglu, O. Oralkan*, M. Kupnik, K. Pauly, B. Khuri-Yakub

Event: 6TH INTERNATIONAL SYMPOSIUM ON THERAPEUTIC ULTRASOUND

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 journal article

Finite element modeling and experimental characterization of crosstalk in 1-D CMUT arrays

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 54(2), 418–430.

By: B. Bayram*, M. Kupnik, G. Yaralioglu*, O. Oralkan*, A. Ergun*, D. Lin, S. Wong*, B. Khuri-yakub*

MeSH headings : Anistreplase; Computer Simulation; Computer-Aided Design; Finite Element Analysis; Image Enhancement / methods; Image Interpretation, Computer-Assisted / methods; Models, Theoretical; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: This paper presents an experimental demonstration of guided interface waves in capacitive micromachined ultrasonic transducers (CMUTs) and compares the experimental results to finite element calculations using a commercial package (LS-DYNA). (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2007 conference paper

Flexible transducer arrays with through-wafer electrical interconnects based on trench refilling with PDMS

2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS). Presented at the 2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS).

By: X. Zhuang*, D. Lin*, O. Oralkan* & B. Khuri-Yakub*

Event: 2007 IEEE 20th International Conference on Micro Electro Mechanical Systems (MEMS)

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2007 journal article

Integration of trench-isolated through-wafer interconnects with 2d capacitive micromachined ultrasonic transducer arrays

Sensors and Actuators A: Physical, 138(1), 221–229.

By: X. Zhuang*, A. Ergun*, Y. Huang, I. Wygant*, O. Oralkan* & B. Khuri-Yakub*

author keywords: capacitive micromachined ultrasonic transducer (CMUT); trench isolation; through-wafer interconnect; post-processing; flip-chip bonding
TL;DR: This paper presents a method to provide electrical connection to a 2D capacitive micromachined ultrasonic transducer array using Flip-chip bonding to integrate the CMUT array with an integrated circuit that comprises the front-end circuits for the transducers and provides mechanical support for the trench-isolated array elements. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2007 chapter

Micromachined ultrasonic transducers

In McGraw-Hill Yearbook of Science and Technology 2008 (pp. 207–210). New York: McGraw-Hill Professional.

By: B. Khuri-Yakub, Ö. Oralkan & M. Kupnik

Source: NC State University Libraries
Added: March 20, 2019

2007 conference paper

The capacitive micromachined ultrasonic transducer (CMUT) as a chem/bio sensor

Proceedings of the IEEE Ultrasonics Symposium, 472–475.

By: B. Khuri-Yakub, K. Park, H. Lee, G. Yaralioglu, A. Ergun, Ö. Oralkan, M. Kupnik, C. Quate ...

Source: NC State University Libraries
Added: April 21, 2019

2007 conference paper

Trench-isolated CMUT arrays with a supporting frame: characterization and imaging results

Proceedings of the IEEE Ultrasonics Symposium, 507–510.

By: X. Zhuang, I. Wygant, D. Lin, M. Kupnik, Ö. Oralkan & B. Khuri-Yakub

Source: NC State University Libraries
Added: April 21, 2019

2006 conference paper

1E-3 Tomographic Photoacoustic Imaging Using Capacitive Micromachined Ultrasonic Transducer (CMUT) Technology

2006 IEEE Ultrasonics Symposium. Presented at the 2006 IEEE Ultrasonics Symposium.

By: S. Vaithilingam*, I. Wygant*, S. Sifferman*, X. Zhuang*, Y. Furukawa*, O. Oralkan*, S. Keren*, S. Gambhir*, B. Khuri-Yakub*

Event: 2006 IEEE Ultrasonics Symposium

Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2006 conference paper

1I-2 Capacitive Micromachined Ultrasonic Transducers for High Intensity Focused Ablation of Upper Abdominal Tumors

2006 IEEE Ultrasonics Symposium. Presented at the 2006 IEEE Ultrasonics Symposium.

By: X. Zhuang*, B. Khuri-Yakub*, G. Yaralioglu*, M. Kupnik*, O. Oralkan*, S. Wong*, A. Ergun*, K. Butts-Pauly*

Event: 2006 IEEE Ultrasonics Symposium

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 journal article

3-D ultrasound imaging using a forward-looking CMUT ring array for intravascular/intracardiac applications

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 53(6), 1202–1211.

By: D. Yeh*, O. Oralkan*, I. Wygant*, M. O'Donnell* & B. Khuri-Yakub*

MeSH headings : Echocardiography / instrumentation; Echocardiography / methods; Echocardiography, Three-Dimensional / instrumentation; Echocardiography, Three-Dimensional / methods; Equipment Design; Equipment Failure Analysis; Image Enhancement / instrumentation; Image Enhancement / methods; Phantoms, Imaging; Reproducibility of Results; Sensitivity and Specificity; Transducers; Ultrasonography, Interventional / instrumentation; Ultrasonography, Interventional / methods
TL;DR: This work presents compelling, full-synthetic, phased-array volumetric images from a forward-viewing capacitive micromachined ultrasonic transducer (CMUT) ring array wire bonded to a custom integrated circuit front end. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2006 conference paper

3-D ultrasound imaging using forward viewing CMUT ring arrays for intravascular and intracardiac applications

IEEE Ultrasonics Symposium, 2005. Presented at the IEEE Ultrasonics Symposium, 2005.

By: D. Yeh*, O. Oralkan*, I. Wygant*, M. O'Donnell* & B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2005.

TL;DR: Full synthetic phased array volumetric ultrasound imaging is demonstrated using a forward-viewing CMUT ring array with 64 elements, in both the conventional (8 MHz) and collapse (19 MHz) regimes of operation. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

5G-6 Forward Looking Intracardiac Imaging Catheters for Electrophysiology

Proceedings of the 2006 IEEE Ultrasonics Symposium, 702–705.

By: D. Stephens*, J. Cannata*, R. Liu*, K. Shung*, O. Oralkan*, A. Nikoozadeh*, P. Khuri-Yakub*, H. Nguyen* ...

Event: 2006 IEEE Ultrasonics Symposium

TL;DR: The first piezoceramic array devices were used successfully to image the myocardium of the right atrium of a pig while simultaneous tissue ablation was performed and FEA and KLM analyses in operation at 14 MHz were characterized. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: April 24, 2019

2006 conference paper

5I-6 Finite Element Analysis of Fabrication Related Thermal Effects in Capacitive Micromachined Ultrasonic Transducers

2006 IEEE Ultrasonics Symposium. Presented at the 2006 IEEE Ultrasonics Symposium.

By: B. Khuri-Yakub*, G. Yaralioglu*, B. Bayram*, M. Kupnik*, S. Wong*, A. Ergun*, O. Oralkan*, D. Lin*

Event: 2006 IEEE Ultrasonics Symposium

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

An endoscopic imaging system based on a two-dimensional CMUT array: real-time imaging results

IEEE Ultrasonics Symposium, 2005. Presented at the IEEE Ultrasonics Symposium, 2005.

By: I. Wygant*, X. Zhuang*, D. Yeh*, S. Vaithilingam*, A. Nikoozadeh*, O. Oralkan*, A. Ergun*, M. Karaman*, B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2005.

TL;DR: A volumetric ultrasound imaging system based on a two-dimensional, 16×16-element, CMUT array is presented andVolumetric data for a wire phantom was acquired in real-time at 30 frames per second. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

Beamforming and hardware design for a multichannel front-end integrated circuit for real-time 3D catheter-based ultrasonic imaging

In S. Emelianov & W. F. Walker (Eds.), Medical Imaging 2006: Ultrasonic Imaging and Signal Processing.

Ed(s): S. Emelianov & W. Walker

Event: Medical Imaging

author keywords: ultrasound; imaging; 3D; volumetric; beamforming; CMUT; integration; electronics
TL;DR: This work evaluates three array designs for the next generation front-end IC and chooses to implement an IC for the full-transmit x-receive with no common elements (FT-XR-NC) design for the authors' next-generation catheter-based imaging system. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

Capacitive micromachined ultrasonic transducer arrays for integrated diagnostic/therapeutic catheters

AIP Conference Proceedings, 829(1), 395–399.

By: S. Wong, I. Wygant, D. Yeh, X. Zhuang, B. Bayram, M. Kupnik, Ö. Oralkan, A. Ergun, G. Yaralioglu, B. Khuri-Yakub

Event: Therapeutic Ultrasound: 5th International Symposium on Therapeutic Ultrasound

Source: NC State University Libraries
Added: April 24, 2019

2006 conference paper

Capacitive micromachined ultrasonic transducers (CMUTs) for photoacoustic imaging

In A. A. Oraevsky & L. V. Wang (Eds.), Photons Plus Ultrasound: Imaging and Sensing 2006: The Seventh Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics.

By: S. Vaithilingam*, I. Wygant*, P. Kuo*, X. Zhuang*, Ö. Oralkan*, P. Olcott*, B. Khuri-Yakub*

Ed(s): A. Oraevsky & L. Wang

Event: Biomedical Optics 2006

author keywords: CMUT; high-frequency; laser; ultrasound; photoacoustic; optoacoustic; integrated electronics; imaging
TL;DR: In this study, a phantom consisting of three 0.86-mm inner diameter polyethylene tubes inside a tissue mimicking material was imaged using a 16 x 16 element CMUT array and the sensitivity of the photoacoustics setup to the concentration of ink in the tube was explored. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

Characterization of cross-coupling in capacitive micromachined ultrasonic transducers

IEEE Ultrasonics Symposium, 2005. Presented at the IEEE Ultrasonics Symposium, 2005.

By: B. Bayram*, M. Kupnik*, G. Yaralioglu*, O. Oralkan*, D. Lin*, X. Zhuang*, A. Ergun*, A. Sarioglu* ...

Event: IEEE Ultrasonics Symposium, 2005.

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 journal article

Experimental characterization of collapse-mode CMUT operation

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 53(8), 1513–1523.

By: O. Oralkan*, B. Bayram*, G. Yaralioglu*, A. Ergun*, M. Kupnik*, D. Yeh*, I. Wygant*, B. Khuri-Yakub*

TL;DR: Compared frequency response and efficiency of the transducer in conventional and collapse regimes, experimental results show that a collapsed membrane can be used to generate and detect ultrasound more efficiently than a membrane operated in the conventional mode. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2006 conference paper

High-resolution imaging with high-frequency 1-D linear CMUT arrays

IEEE Ultrasonics Symposium, 2005. Presented at the IEEE Ultrasonics Symposium, 2005.

By: D. Yeh*, O. Oralkan*, I. Wygant*, A. Ergun*, J. Wong* & B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2005.

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 journal article

IVUS beyond the horizon

EuroIntervention, 2(1), 132–142.

By: A. Steen, R. Baldewsing, F. Degertekin, S. Emelianov, M. Frijlink, Y. Furukawa, D. Goertz, M. Karaman ...

Source: NC State University Libraries
Added: March 20, 2019

2006 conference paper

Interconnection and Packaging for 2D Capacitive Micromachined Ultrasonic Transducer Arrays Based on Through-Wafer Trench Isolation

19th IEEE International Conference on Micro Electro Mechanical Systems. Presented at the 19th IEEE International Conference on Micro Electro Mechanical Systems.

By: X. Zhuang*, A. Ergun*, O. Oralkan*, I. Wygant* & B. Khuri-Yakub*

Event: 19th IEEE International Conference on Micro Electro Mechanical Systems

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

P2P-6 Trench-Isolated CMUT Arrays with a Supporting Frame

2006 IEEE Ultrasonics Symposium. Presented at the 2006 IEEE Ultrasonics Symposium.

By: X. Zhuang*, O. Oralkan*, B. Khuri-Yakub*, A. Ergun* & D. Lin*

Event: 2006 IEEE Ultrasonics Symposium

author keywords: CMUT; through-wafer trench-isolated interconnect; supporting frame
Sources: Crossref, NC State University Libraries
Added: March 24, 2019

2006 conference paper

P3H-6 An Integrated Circuit with Transmit Beamforming and Parallel Receive Channels for Real-Time Three-Dimensional Ultrasound Imaging

2006 IEEE Ultrasonics Symposium. Presented at the 2006 IEEE Ultrasonics Symposium.

By: B. Khuri-Yakub*, M. Karaman*, O. Oralkan*, A. Nikoozadeh*, I. Wygant*, H. Lee*, D. Yeh*

Event: 2006 IEEE Ultrasonics Symposium

TL;DR: The design of an integrated circuit that will be flip-chip bonded to a 16times16-element CMUT array that provides 16 receive channels which can be configured to receive along either of the array diagonals or on any single row of thearray. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

P3H-7 Volumetric Imaging Using Fan-Beam Scanning with Reduced Redundancy 2D Arrays

2006 IEEE Ultrasonics Symposium. Presented at the 2006 IEEE Ultrasonics Symposium.

By: B. Khuri-Yakub*, M. Karaman*, O. Oralkan* & I. Wygant*

Event: 2006 IEEE Ultrasonics Symposium

TL;DR: Four array designs with reduced redundancy in spatial frequency contents are explored based on simulated point spread functions, frame rate, motion susceptibility, and signal-to-noise ratio. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

Photoacoustic imaging using a two-dimensional CMUT array

IEEE Ultrasonics Symposium, 2005. Presented at the IEEE Ultrasonics Symposium, 2005.

By: I. Wygant*, X. Zhuang*, P. Kuo*, D. Yeh*, O. Oralkan* & B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2005.

TL;DR: Volumetric photoacoustic images of a vessel-like phantom, showing regions with higher blood concentration can be identified, which is useful for imaging vascularization and the early detection of cancer is presented. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2006 conference paper

Through-wafer trench-isolated electrical interconnects for CMUT arrays

IEEE Ultrasonics Symposium, 2005. Presented at the IEEE Ultrasonics Symposium, 2005.

By: X. Zhuang*, A. Ergun*, O. Oralkan*, Y. Huang*, I. Wygant*, G. Yaralioglu*, D. Yeh*, B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2005.

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 conference paper

A miniature real-time volumetric ultrasound imaging system

In W. F. Walker & S. Y. Emelianov (Eds.), Medical Imaging 2005: Ultrasonic Imaging and Signal Processing.

By: I. Wygant*, D. Yeh*, X. Zhuang*, A. Nikoozadeh*, O. Oralkan*, A. Ergun*, M. Karaman*, B. Khuri-Yakub*

Ed(s): W. Walker & S. Emelianov

Event: Medical Imaging

author keywords: capacitive micromachined ultrasonic transducer; CMUT; two-dimensional array; electronics; ultrasonic imaging; integration; synthetic aperture; flip-chip bonding; through-wafer interconnects; systems
TL;DR: Progress made in the development of a miniature real-time volumetric ultrasound imaging system is presented, targeted for use in a 5-mm endoscopic channel and to demonstrate the advantages of the capacitive micromachined ultrasonic transducer (CMUT) technology for medical imaging. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: April 5, 2019

2005 conference paper

CMUT ring arrays for forward-looking intravascular imaging

IEEE Ultrasonics Symposium, 2004. Presented at the IEEE Ultrasonics Symposium, 2004.

By: O. Oralkan*, S. Hansen*, B. Bayram*, G. Yaralioglu*, A. Ergun* & B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2004

TL;DR: An annular CMUT ring array designed and fabricated for the tip of a catheter used for forward-looking intravascular imaging is described, and a nonlinear dynamic transient finite element analysis for the transducer is performed, finding these results to be in good agreement with experimental measurements. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 journal article

Capacitive micromachined ultrasonic transducer design for high power transmission

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 52(2), 326–339.

By: B. Bayram*, O. Oralkan*, A. Ergun*, E. Haeggstrom*, G. Yaralioglu* & B. Khuri-Yakub*

TL;DR: The collapse-snapback operation of the cMUT: the membrane is collapsed onto the substrate in the collapsing cycle, and released in the snapback cycle overcomes the above-mentioned limitations of the conventional operation. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2005 conference paper

Capacitive micromachined ultrasonic transducer technology for medical ultrasound imaging

In W. F. Walker & S. Y. Emelianov (Eds.), Medical Imaging 2005: Ultrasonic Imaging and Signal Processing.

By: A. Ergun*, X. Zhuang*, Y. Huang*, O. Oralkan*, G. Yaralioglu* & B. Khuri-Yakub*

Ed(s): W. Walker & S. Emelianov

Event: Medical Imaging

author keywords: capacitive micromachined ultrasonic transducer; two-dimensional array; ultrasonic imaging; wafer bonding
TL;DR: Device examples of one-dimensional and two-dimensional arrays designed to work in the 1 to 50 MHz range with 100% fractional bandwidth highlight the advantages of the wafer-bonding method, and show that cMUT technology is indeed the better candidate for next generation ultrasonic imaging arrays. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 journal article

Capacitive micromachined ultrasonic transducers: fabrication technology

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 52(12), 2242–2258.

By: A. Erguri*, Y. Huang*, X. Zhuang*, O. Oralkan*, G. Yarahoglu* & B. Khuri-Yakub*

MeSH headings : Biotechnology / instrumentation; Biotechnology / methods; Electric Capacitance; Electronics, Medical; Equipment Design / methods; Equipment Failure Analysis; Membranes, Artificial; Microelectrodes; Miniaturization; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: It was concluded that wafer-bonded cMUT technology was superior in terms of process control, yield, and uniformity because the number of steps and consequent process time were reduced and turn-around time was improved significantly. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2005 journal article

Coherent array imaging using phased subarrays. Part II: simulations and experimental results

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 52(1), 51–64.

By: J. Johnson*, O. Oralkan*, S. Ergun*, U. Demirci*, M. Karaman* & B. Khuri-Yakub*

MeSH headings : Computer Simulation; Computer-Aided Design; Echocardiography, Doppler, Pulsed / instrumentation; Echocardiography, Doppler, Pulsed / methods; Equipment Design; Equipment Failure Analysis; Image Enhancement / instrumentation; Image Enhancement / methods; Image Interpretation, Computer-Assisted / instrumentation; Image Interpretation, Computer-Assisted / methods; Models, Biological; Phantoms, Imaging; Tomography, Optical Coherence / instrumentation; Tomography, Optical Coherence / methods; Transducers
TL;DR: The simulated and experimental test results presented in this paper validate theoretical expectations and illustrate the flexibility of PSA imaging as a way to exchange SNR and frame rate for simplified front-end hardware. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2005 conference paper

Dynamic FEM analysis of multiple cmut cells in immersion

IEEE Ultrasonics Symposium, 2004. Presented at the IEEE Ultrasonics Symposium, 2004.

By: B. Bayram*, G. Yaralioglu*, A. Ergun*, O. Oralkan* & B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2004

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 journal article

Dynamic analysis of capacitive micromachined ultrasonic transducers

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 52(12), 2270–2275.

By: B. Bayram*, G. Yaralioglu*, M. Kupnik*, A. Ergun*, O. Oralkan*, A. Nikoozadeh*, B. Khuri-Yakub*

MeSH headings : Computer Simulation; Computer-Aided Design; Electric Capacitance; Electronics, Medical; Equipment Design; Equipment Failure Analysis; Finite Element Analysis; Linear Models; Membranes, Artificial; Microelectrodes; Miniaturization; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: The time-domain, finite element calculations for cMUTs using LS-DYNA, a commercially available finite element package, are presented and a good match was observed; the model is useful for designing cM UTs that operate in regimes where membranes make contact with the substrate. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2005 conference paper

High-frequency CMUT arrays for high-resolution medical imaging

In W. F. Walker & S. Y. Emelianov (Eds.), Medical Imaging 2005: Ultrasonic Imaging and Signal Processing.

By: D. Yeh*, O. Oralkan*, A. Ergun*, X. Zhuang*, I. Wygant* & B. Khuri-Yakub*

Ed(s): W. Walker & S. Emelianov

Event: Medical Imaging

author keywords: capacitive micromachined ultrasonic transducer; CMUT; high-frequency ultrasound; ring array
TL;DR: The paper describes high-frequency 1D CMUT arrays designed and fabricated for use in electronically scanned high-resolution ultrasonic imaging systems, which reveals that the transducer active area should be maximized to obtain a wideband response at high frequencies. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 conference paper

High-frequency CMUT arrays for high-resolution medical imaging

IEEE Ultrasonics Symposium, 2004. Presented at the IEEE Ultrasonics Symposium, 2004.

By: O. Oralkan*, S. Hansen*, B. Bayram*, G. Yaralglu, A. Ergun* & B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2004

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 conference paper

Integrated ultrasonic imaging systems based on CMUT arrays: recent progress

IEEE Ultrasonics Symposium, 2004. Presented at the IEEE Ultrasonics Symposium, 2004.

By: I. Wygant*, X. Zhuang*, D. Yeh*, A. Nikoozadeh*, O. Oralkan*, A. Ergun*, M. Karaman*, B. Khuri-Yakub*

Event: IEEE Ultrasonics Symposium, 2004

TL;DR: The paper describes the development of an ultrasonic imaging system based on a two-dimensional capacitive micromachined ultrasonic transducer array, and the progress made on implementing each of its components: a 16/spl times/16 CMUT array; custom-designed integrated circuits; a flip-chip bonding technique; signal-processing hardware. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 conference paper

Integrated ultrasound imaging systems based on capacitive micromachined ultrasonic transducer arrays

Proceedings of the IEEE Conference on Sensors, 704–707.

By: I. Wygant, D. Yeh, X. Zhuang, S. Vaithilingam, A. Nikoozadeh, Ö. Oralkan, A. Ergun, G. Yaralioglu, B. Khuri-Yakub

Source: NC State University Libraries
Added: April 21, 2019

2005 chapter

Techniques and Applications of Capacitive Micromachined Ultrasonic Transducers

In C. T. Leondes (Ed.), Fabrication Techniques for MEMS/NEMS (pp. 223–280). New York: Springer.

By: A. Ergun, G. Yaralioglu, Ö. Oralkan & B. Khuri-Yakub

Ed(s): C. Leondes

Source: NC State University Libraries
Added: March 20, 2019

2005 conference paper

Two-dimensional capacitive micromachined ultrasonic transducer (CMUT) arrays for a miniature integrated volumetric ultrasonic imaging system

In W. F. Walker & S. Y. Emelianov (Eds.), Medical Imaging 2005: Ultrasonic Imaging and Signal Processing.

By: X. Zhuang*, I. Wygant*, D. Yeh*, A. Nikoozadeh*, O. Oralkan*, A. Ergun*, C. Cheng*, Y. Huang* ...

Ed(s): W. Walker & S. Emelianov

Event: Medical Imaging

author keywords: capacitive micromachined ultrasonic transducer; CMUT; two-dimensional array; ultrasonic imaging; through-wafer interconnect; integration; flip-chip bonding
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2005 conference paper

Underwater acoustic imaging using capacitive micromachined ultrasonic transducer arrays

Oceans '02 MTS/IEEE. Presented at the Oceans 2002 Conference and Exhibition.

Event: Oceans 2002 Conference and Exhibition.

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2004 journal article

Forward-viewing CMUT arrays for medical imaging

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 51(7), 887–895.

MeSH headings : Electric Capacitance; Equipment Design; Equipment Failure Analysis; Miniaturization; Reproducibility of Results; Sensitivity and Specificity; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: The designed, forward-viewing annular CMUT array is suitable for mounting on the front surface of a cylindrical catheter probe and can provide Doppler information for measurement of blood flow and guiding information for navigation through blood vessels in intravascular ultrasound imaging. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2004 chapter

Micromachined Ultrasonic Transducers and Their use for 2D and 3D Imaging

In Acoustical Imaging (pp. 1–9).

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2004 conference paper

Phased subarray imaging for low-cost, wideband coherent array imaging

IEEE Symposium on Ultrasonics, 2003. Presented at the IEEE Symposium on Ultrasonics, 2003.

By: J. Johnson*, O. Oralkan*, A. Ergun*, U. Demirci*, M. Karaman & B. Khuri-Yakub*

Event: IEEE Symposium on Ultrasonics, 2003

TL;DR: A new method is presented for designing the subarray-dependent interpolation filters suitable for wideband PSA imaging, and both the SNR and contrast-to-noise ration (CNR) improved with increased subarray size. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2003 journal article

A multichannel pipeline analog-to-digital converter for an integrated 3-d ultrasound imaging system

IEEE Journal of Solid-State Circuits, 38(7), 1266–1270.

By: K. Kaviani, O. Oralkan*, P. Khuri-Yakub* & B. Wooley

author keywords: analog-to-digital converter (ADC); mixed-signal integrated circuits; multichannel; multiplexing; pipeline analog-to-digital conversion; switched-capacitor circuits; ultrasound imaging
TL;DR: An experimental prototype of the proposed architecture occupies less than 4 mm/sup 2/ of active silicon area and shows a peak signal-to-noise-plus-distortion ratio more than 54 dB for a 2.1-MHz input signal, while dissipating only 20 mW of analog power per input channel from a 2-V supply. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2003 conference paper

Broadband capacitive micromachined ultrasonic transducers ranging from 10 kHz to 60 MHz for imaging arrays and more

2002 IEEE Ultrasonics Symposium, 2002. Proceedings. Presented at the 2002 IEEE International Ultrasonics Symposium.

By: A. Ergun*, Y. Huang*, C. Cheng*, O. Oralkan*, J. Johnson*, H. Jagannathan*, U. Demirci*, G. Yaralioglu* ...

Event: 2002 IEEE International Ultrasonics Symposium

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2003 conference paper

Simulation and experimental characterization of a 2-D, 3-MHz capacitive micromachined ultrasonic transducer (CMUT) array element

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027). Presented at the 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium.

Event: 1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2003 conference paper

Volumetric imaging using 2D capacitive micromachined ultrasonic transducer arrays (CMUTs): initial results

2002 IEEE Ultrasonics Symposium, 2002. Proceedings. Presented at the 2002 IEEE International Ultrasonics Symposium.

By: O. Oralkan*, A. Ergun*, C. Cheng*, J. Johnson, M. Karaman*, T. Lee, B. Khuri-Yakub*

Event: 2002 IEEE International Ultrasonics Symposium

Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2003 journal article

Volumetric ultrasound imaging using 2-D CMUT arrays

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 50(11), 1581–1594.

By: O. Oralkan*, A. Ergun*, C. Cheng*, J. Johnson*, M. Karaman*, T. Lee, B. Khuri-Yakub*

MeSH headings : Algorithms; Equipment Failure Analysis; Image Enhancement / instrumentation; Image Enhancement / methods; Image Interpretation, Computer-Assisted / instrumentation; Image Interpretation, Computer-Assisted / methods; Imaging, Three-Dimensional / instrumentation; Imaging, Three-Dimensional / methods; Nucleocapsid Proteins; Phantoms, Imaging; Transducers; Ultrasonography / instrumentation; Ultrasonography / methods
TL;DR: This study experimentally demonstrates that 2-D CMUT arrays can be fabricated with high yield using silicon IC-fabrication processes, individual electrical connections can be provided using through-wafer vias, and flip-chip bonding can be used to integrate these dense 1-D arrays with electronic circuits for practical 3-D imaging applications. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2002 conference paper

A multichannel, pipeline analog-to- digital converter for an integrated 3-D ultrasound imaging system

Proceedings of the European SolidState Circuits Conference (ESSCIRC), 263–266.

By: K. Kaviani, Ö. Oralkan, B. Khuri-Yakub & B. Wooley

Source: NC State University Libraries
Added: April 21, 2019

2002 conference paper

Capacitive micromachined ultrasonic transducer arrays for medical imaging: experimental results

2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium (Cat. No.01CH37263). Presented at the 2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium.

By: U. Denmirci, O. Oralkan*, J. Johnson*, A. Ergun*, M. Karaman* & B. Khuri-Yakub*

Event: 2001 IEEE Ultrasonics Symposium. Proceedings. An International Symposium

TL;DR: The design and optimization of the immersion cMUTs for medical imaging system are discussed, and the phased array B-scan sector images taken by 1D MUT arrays are presented. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2002 journal article

Capacitive micromachined ultrasonic transducers: next-generation arrays for acoustic imaging?

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 49(11), 1596–1610.

By: O. Oralkan*, A. Ergun*, J. Johnson*, M. Karaman*, U. Demirci*, K. Kaviani*, T. Lee*, B. Khuri-Yakub*

MeSH headings : Adipose Tissue / diagnostic imaging; Algorithms; Artifacts; Computer Simulation; Electric Capacitance; Electrodes; Equipment Design; Image Enhancement / methods; Liver / diagnostic imaging; Miniaturization; Phantoms, Imaging; Quality Control; Sensitivity and Specificity; Signal Processing, Computer-Assisted; Stochastic Processes; Transducers; Ultrasonography / instrumentation
TL;DR: The first pulse-echo phased array B-scan sector images using a 128-element, one-dimensional (1-D) linear CMUT array is presented and preliminary investigations on the effects of crosstalk among array elements on the image quality are performed. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2002 conference paper

Design of all-pole low-pass ladder filters using current-mode damped integrators

1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96. Presented at the 1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96.

By: O. Oralkan*, A. Ilker Karsilayan & M. Ali Tan

Event: 1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2002 conference paper

Differentiation between electric breakdowns and dielectric breakdown in thin silicon oxides

Proceedings of the 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits. Presented at the 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits.

By: J. Jackson*, T. Robinson*, O. Oralkan*, D. Dumin* & G. Brown*

Event: 1997 6th International Symposium on the Physical and Failure Analysis of Integrated Circuits

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: March 30, 2019

2002 journal article

Medical imaging using capacitive micromachined ultrasonic transducer arrays

Ultrasonics, 40(1-8), 471–476.

By: J. Johnson*, Ö. Oralkan*, U. Demirci*, S. Ergun*, M. Karaman* & P. Khuri-Yakub*

author keywords: capacitive micromachined ultrasonic transducer; medical imaging; three-dimensional ultrasound; two-dimensional ultrasound array
TL;DR: An ultrasound probe architecture designed to provide volumetric ultrasound imaging from within an endoscope channel is proposed and Beamforming and image formation algorithms that aim to reduce the complexity of data acquisition hardware are tested via numerical simulations and using real data acquired from the system. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: March 18, 2019

2002 conference paper

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