Advanced Self Powered Systems of Sensors and Technologies Center
Works Published in 2021
Displaying works 1 - 20 of 222 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2021 journal article
Wireless, battery-free, subdermally implantable platforms for transcranial and long-range optogenetics in freely moving animals
Proceedings of the National Academy of Sciences of the United States of America, 118(30).
Contributors: J. Ausra *, M. Wu *, X. Zhang *, A. Vázquez-Guardado* , P. Skelton *, R. Peralta *, R. Avila *, T. Murickan*
MeSH headings : Animals; Brain / physiology; Mice; Mice, Inbred C57BL; Optogenetics; Prostheses and Implants / statistics & numerical data; Transcranial Direct Current Stimulation / instrumentation; Wireless Technology / instrumentation
TL;DR:
This work introduces a wireless, battery-free system that interfaces to the animal as a minimally invasive, subdermal implant capable of delivering high-intensity optogenetic light stimulation directly through the skull, without penetrating the brain, and enables new, ethologically grounded neuroscience experiments, applicable over large experimental arenas.
(via Semantic Scholar)
www.pnas.org (publisher PDF)
Source: ORCID
Added: March 14, 2023
2021 journal article
Biocompatible Light Guide-Assisted Wearable Devices for Enhanced UV Light Delivery in Deep Skin
Advanced Functional Materials, 31(23).
Contributors: H. Zhang *, H. Zhao *, X. Zhao *, C. Xu*, D. Franklin *, A. Vázquez-Guardado* , W. Bai *, J. Zhao*
TL;DR:
A skin‐integrated optoelectronic device that incorporates an array of UVA (360 nm) light emitting diodes in layouts that match those of typical lesional plaques and in designs that couple to biocompatible, penetrating polymer microneedle light waveguides to provide optical access to deep skin is introduced.
(via Semantic Scholar)
Source: ORCID
Added: March 14, 2023
2021 journal article
Electrochemical Bioelectronics in Drug Delivery: Effect of the Initial Gas Volume
Journal of Applied Mechanics, 89(1).
TL;DR:
This work studies the refillable aspect of implantable bioelectronic systems using an analytic model for the drug delivery time established from the ideal gas law when an initial gas volume is present in the device electrolyte reservoirs and derives an analytical solution derived from the perturbation method, which agrees well with the numerical solution.
(via Semantic Scholar)
Source: ORCID
Added: March 14, 2023
2021 journal article
DNA-Modified Plasmonic Sensor for the Direct Detection of Virus Biomarkers from the Blood
Nano Letters, 21(18), 7505–7511.
Contributors: A. Vázquez-Guardado* , F. Mehta*, B. Jimenez *, A. Biswas *, K. Ray*, A. Baksh *, S. Lee *, N. Saraf*, S. Seal *, D. Chanda *
MeSH headings : Animals; Biomarkers; Cattle; DNA; Dengue; Dengue Virus / genetics; Viral Nonstructural Proteins
TL;DR:
A plasmonic biosensor is demonstrated to detect Dengue virus via its nonstructural protein NS1 biomarker, providing a rapid clinical diagnosis of infectious diseases directly from minimally processed biological samples at point of care locations.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Source: ORCID
Added: March 14, 2023
2021 article
Superchiral light generation on nanoimprinted achiral plasmonic substrates for chiral drug detection
Biswas, A., Vázquez-Guardado, A., & Chanda, D. (2021, March 5). (G. Freymann, E. Blasco, & D. Chanda, Eds.). Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIV.
Ed(s): G. Freymann, E. Blasco & D. Chanda *
TL;DR:
This talk will focus on the detection of chiral drugs and biomolecules using a degenerate cavity-coupled plasmonic substrate using enantioselective chiral molecule detection that are relevant to the pharmaceutical industry.
(via Semantic Scholar)
Source: ORCID
Added: March 14, 2023
2021 journal article
Wireless, implantable catheter-type oximeter designed for cardiac oxygen saturation
Science Advances, 7(7).
Contributors: W. Lu *, W. Bai *, H. Zhang *, C. Xu*, A. Chiarelli *, A. Vázquez-Guardado* , Z. Xie *, H. Shen *
TL;DR:
In vitro and in vivo testing shows that the wireless, miniaturized, implantable optoelectronic catheter system incorporating optical components on the probe, encapsulated by soft biocompatible materials, offers measurement accuracy and precision equivalent to those of existing clinical standards.
(via Semantic Scholar)
Source: ORCID
Added: March 13, 2023
2021 journal article
Battery-free, wireless soft sensors for continuous multi-site measurements of pressure and temperature from patients at risk for pressure injuries
Nature Communications, 12(1).
MeSH headings : Adult; Aged; Aged, 80 and over; Female; Humans; Male; Middle Aged; Biosensing Techniques / instrumentation; Biosensing Techniques / methods; Electric Power Supplies; Equipment Design; Monitoring, Physiologic; Pressure; Skin; Temperature; Thermography / instrumentation; Thermography / methods; Wireless Technology; Pressure Ulcer
TL;DR:
A soft, skin-mountable sensor that can continuously provide readings via antennas mounted under bedding is introduced and clinical trials involving two hemiplegic patients and a tetraplegic patient demonstrate the feasibility, functionality and long-term stability of this technology in operating hospital settings.
(via Semantic Scholar)
Source: ORCID
Added: March 13, 2023
2021 journal article
Wireless multilateral devices for optogenetic studies of individual and social behaviors
Nature Neuroscience, 24(7), 1035–1045.
Contributors: Y. Yang *, M. Wu *, A. Vázquez-Guardado* , A. Wegener *, J. Grajales-Reyes *, Y. Deng *, T. Wang *, R. Avila *
MeSH headings : Animals; Mice; Optogenetics / instrumentation; Social Behavior; Wireless Technology / instrumentation
TL;DR:
The authors introduce advanced technology for controlled wireless light delivery in optogenetics applications with real-time user programming capacity, highlighted by induction of neural synchrony to modify social behavior in mice.
(via Semantic Scholar)
Source: ORCID
Added: March 13, 2023
2021 chapter
Introduction: biopolymers and biocomposites
In S. Madbouly & C. Zhang (Eds.), Biopolymers and Composites (pp. 1–26).
Ed(s): S. Madbouly & C. Zhang
Sources: Crossref, NC State University Libraries
Added: August 30, 2022
2021 journal article
NMR-assisted structure determination of coordination polymers
Acta Crystallographica Section A Foundations and Advances, 77, C469.
Sources: Crossref, NC State University Libraries
Added: August 30, 2022
2021 article
Intravascular Dual-frequency Ultrasound Transducer Using a Stack Composite
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).
author keywords: Intravascular transducer; dual-frequency thrombolysis; sonothrombolysis; ultrasound catheter
TL;DR:
An intravascular ultrasound transducer with a composite structure is reported, which can operate with the dual-frequency condition for enhancing the cavitation effect of infused contrast agents and showed a 34% improvement in the lysis rate when theDual-frequency excitation was applied with the nanodroplets infusion.
(via Semantic Scholar)
Source: Web Of Science
Added: August 15, 2022
2021 article
Design and Simulation of Heating Transducer Arrays for Ultrasound-Induced Thermal Strain Imaging
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).
author keywords: ultrasound-induced thermal strain imaging; atherosclerosis plaque; dual 1.5D heating arrays; dual-focus beamforming
TL;DR:
The acoustic and thermal simulation results demonstrated that the designed dual heating arrays can induce a 2.1 °C temperature rise within 50 ms in a volume of 2 × 10 × 10 mm3(in terms of full width at half maximum, FWHM).
(via Semantic Scholar)
Source: Web Of Science
Added: August 15, 2022
2021 article
Quantitative Study on Error Sensitivity in Ultrasound Probe Calibration with Hybrid Tracking
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).
author keywords: 3D freehand ultrasound; spatial calibration; error sensitivity
TL;DR:
A linear relationship was found between the perturbation in imaging plane motion estimation and the error caused in the calibration solution, which showed a good error tolerance for the hybrid tracking enabled US probe calibration.
(via Semantic Scholar)
Source: Web Of Science
Added: August 15, 2022
2021 article
Design and Fabrication of 1D CMUT Arrays for Dual-Mode Acoustic Angiography Applications - Preliminary Results
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).
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).
author keywords: ultrasound; focused; ultrasound; transducer; transcranial; fabrication; stimulation
Sources: Web Of Science, NC State University Libraries
Added: August 15, 2022
2021 article
Laser beam guided magnetic scanning catheter for sonothrombolysis with real-time clot detection
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).
author keywords: ultrasound transducers; microbubbles; magnetic catheter; thrombolysis; sonothrombolysis
TL;DR:
A novel magnetically driven scanning catheter device that integrates a stacked transducer, a tiny ring magnet, and fiber-optic laser sensors for clot spot tracking during the thrombolysis process is reported.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Source: Web Of Science
Added: August 15, 2022
2021 article
Design of Pre-Charged CMUTs with a Metal Floating Gate
INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).
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
Frontispiz: Tunable Hydrophobicity via Dimensionally Confined Polymerization of Organometallic Adducts
Angewandte Chemie, 133(25).
TL;DR:
The process is illustrated by creating tunable features on pre‐organized metal particle beds with concomitant tunable wettability as illustrated through the so‐called petal and lotus effects.
(via Semantic Scholar)
Source: ORCID
Added: August 3, 2022
2021 journal article
Tunable Hydrophobicity via Dimensionally Confined Polymerization of Organometallic Adducts
Angewandte Chemie International Edition, 60(25), 13929–13936.
author keywords: polymerization; self-assembly; textured surfaces; undercooled metals; wetting
Source: ORCID
Added: August 3, 2022
2021 journal article
Tunable Hydrophobicity via Dimensionally Confined Polymerization of Organometallic Adducts
Angewandte Chemie, 133(25), 14048–14055.
Source: ORCID
Added: August 3, 2022
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