Works (18)

Updated: October 14th, 2024 09:57

2024 journal article

Design, Fabrication, and Characterization of Capacitive Micromachined Ultrasonic Transducers for Transcranial, Multifocus Neurostimulation

Micromachines, 15(9), 1106.

By: T. Ibn Minhaj n, M. Annayev n, O. Adelegan n, A. Biliroğlu n, F. Yamaner n & Ö. Oralkan n

author keywords: neurostimulation; capacitive micromachined ultrasonic transducer (CMUT); single-element; large area transducer; fabrication; design; FEM; non-invasive; ultrasound; nonhuman primate model
topics (OpenAlex): Ultrasound and Hyperthermia Applications; Photoacoustic and Ultrasonic Imaging; Ultrasound Imaging and Elastography
Sources: Web Of Science, ORCID, Crossref, NC State University Libraries
Added: September 1, 2024

2023 article

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

Annayev, M., Minhaj, T. I., Adelegan, O. J., Yamaner, F. Y., Dayton, P. A., & Oralkan, Ö. (2023, December 12). IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 71, pp. 191–201.

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

author keywords: Acoustic angiography (AA); capacitive micromachined ultrasonic transducer (CMUT); dual-mode dual-frequency array; glass substrate
topics (OpenAlex): Ultrasound and Hyperthermia Applications; Photoacoustic and Ultrasonic Imaging; Ultrasound Imaging and Elastography
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)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: December 13, 2023

2022 article

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

Sanders, J. L., Biliroglu, A. O., Newsome, I. G., Adelegan, O. J., Yamaner, F. Y., Dayton, P. A., & Oralkan, O. (2022, May 6). IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 7, pp. 1–1.

By: J. Sanders n, A. Biliroglu n, I. Newsome n, O. Adelegan n, F. Yamaner n, P. Dayton n, O. Oralkan n

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
topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Ultrasound Imaging and Elastography; Ultrasonics and Acoustic Wave Propagation
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)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: July 1, 2022

2022 article

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

Belekov, E., Bautista, K. J., Annayev, M., Adelegan, O. J., Biliroglu, A. O., Kierski, T. M., … Oralkan, O. (2022, October 10). 2022 IEEE International Ultrasonics Symposium (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
topics (OpenAlex): Photoacoustic and Ultrasonic Imaging; Ultrasound and Hyperthermia Applications; Ultrasound Imaging and Elastography
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)
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Sources: Web Of Science, NC State University Libraries
Added: February 6, 2023

2021 article

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

Seok, C., Adelegan, O. J., Biliroglu, A. O., Yamaner, F. Y., & Oralkan, O. (2021, August 1). IEEE Transactions on Biomedical Circuits and Systems, Vol. 8, pp. 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
topics (OpenAlex): Ultrasound Imaging and Elastography; Ultrasound and Hyperthermia Applications; Wireless Power Transfer Systems; Ultrasound and Cavitation Phenomena
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)
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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

Annayev, M., Adelegan, O. J., Yamaner, F. Y., Dayton, P. A., & Oralkan, Ö. (2021, September 11).

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

author keywords: Dual-mode dual-frequency; capacitive micromachined ultrasonic transducer; CMUT; acoustic angiography
topics (OpenAlex): Ultrasound Imaging and Elastography; Ultrasound and Hyperthermia Applications; Photoacoustic and Ultrasonic Imaging
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)
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Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022

2021 article proceedings

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

By: T. 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
topics (OpenAlex): Ultrasound and Hyperthermia Applications; Ultrasound Imaging and Elastography; Ultrasound and Cavitation Phenomena
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Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: August 15, 2022

2021 article

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

Adelegan, O. J., Coutant, Z. A., Wu, X., Yamaner, F. Y., & Oralkan, O. (2021, April 27). IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, Vol. 8, pp. 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
topics (OpenAlex): Advanced MEMS and NEMS Technologies; Advanced Sensor and Energy Harvesting Materials; Ultrasound Imaging and Elastography
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)
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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

Annayev, M., Adelegan, O. J., Yamaner, F. Y., & Oralkan, Ö. (2021, September 11). INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).

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

author keywords: Pre-charged; zero-bias; energy harvesting; capacitive micromachined ultrasonic transducer; CMUT
topics (OpenAlex): Ultrasound Imaging and Elastography; Advanced Sensor and Energy Harvesting Materials; Ultrasonics and Acoustic Wave Propagation
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Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022

2021 article

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

Adelegan, O. J., Coutant, Z. A., Minhaj, T. I., Seok, C., Biliroglu, A. O., Yamaner, F. Y., & Oralkan, O. (2021, September 20). Journal of Microelectromechanical Systems, Vol. 30, pp. 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
topics (OpenAlex): Advanced Sensor and Energy Harvesting Materials; Advanced MEMS and NEMS Technologies; 3D IC and TSV technologies
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: November 10, 2021

2020 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. (2020, August 6). 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
topics (OpenAlex): Ultrasound Imaging and Elastography; Ultrasound and Hyperthermia Applications; Ultrasonics and Acoustic Wave Propagation
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)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: February 26, 2021

2019 article

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

Seok, C., Mahmud, M. M., Kumar, M., Adelegan, O. J., Yamaner, F. Y., & Oralkan, O. (2019, February 1). IEEE Internet of Things Journal, Vol. 6, pp. 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)
topics (OpenAlex): Acoustic Wave Resonator Technologies; Gas Sensing Nanomaterials and Sensors; Analytical Chemistry and Sensors
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)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: March 11, 2019

2018 article

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

Zhang, X., Adelegan, O. J., Yamaner, F. Y., & Oralkan, O. (2018, January 11). Journal of Microelectromechanical Systems, Vol. 27, pp. 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
topics (OpenAlex): Advanced MEMS and NEMS Technologies; Acoustic Wave Resonator Technologies; Mechanical and Optical Resonators
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)
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7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
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

topics (OpenAlex): Advanced MEMS and NEMS Technologies; Acoustic Wave Resonator Technologies; Ultrasonics and Acoustic Wave Propagation
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2016 article

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

Seok, C., Mahmud, M. M., Adelegan, O., Zhang, X., & Oralkan, O. (2016, October 1). 2016 Ieee Sensors.

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

topics (OpenAlex): Acoustic Wave Resonator Technologies; Gas Sensing Nanomaterials and Sensors; Advanced Chemical Sensor Technologies
UN Sustainable Development Goals Color Wheel
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

topics (OpenAlex): Advanced Sensor and Energy Harvesting Materials; Acoustic Wave Resonator Technologies; Ultrasonics and Acoustic Wave Propagation
Sources: NC State University Libraries, Crossref, NC State University Libraries
Added: August 6, 2018

2015 article

A low-power wearable substance monitoring device

Howell, J., Nag, A., McKnight, M., Narsipur, S., & Adelegan, O. (2015, March 1).

By: J. Howell n, A. Nag n, M. McKnight n, S. Narsipur n & O. Adelegan n

topics (OpenAlex): Forensic Toxicology and Drug Analysis; High Altitude and Hypoxia; Heart Rate Variability and Autonomic Control
TL;DR: Developing a device in the form of a wrist-watch that is capable of measuring selected physiological parameters using commercially available sensors and an Android application with algorithms capable of determining if the user is under the influence of alcohol or drugs has been developed and tested. (via Semantic Scholar)
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3. Good Health and Well-being (OpenAlex)
Source: 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

author keywords: High frequency transducer array; Broadband; CMUT; Anodic bonding; Glass
topics (OpenAlex): Acoustic Wave Resonator Technologies; GaN-based semiconductor devices and materials; Advanced MEMS and NEMS Technologies
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Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

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