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Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy
Measurement of femtoscale displacements in the ultrasonic frequency range is attractive for advanced material characterization and sensing, yet major challenges remain in their reliable transduction using non-optical modalities, which can dramatically reduce the size and complexity of the transducer...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4918345/ https://www.ncbi.nlm.nih.gov/pubmed/26258983 http://dx.doi.org/10.1038/ncomms8885 |
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author | Talukdar, Abdul Faheem Khan, M. Lee, Dongkyu Kim, Seonghwan Thundat, Thomas Koley, Goutam |
author_facet | Talukdar, Abdul Faheem Khan, M. Lee, Dongkyu Kim, Seonghwan Thundat, Thomas Koley, Goutam |
author_sort | Talukdar, Abdul |
collection | PubMed |
description | Measurement of femtoscale displacements in the ultrasonic frequency range is attractive for advanced material characterization and sensing, yet major challenges remain in their reliable transduction using non-optical modalities, which can dramatically reduce the size and complexity of the transducer assembly. Here we demonstrate femtoscale displacement transduction using an AlGaN/GaN heterojunction field effect transistor-integrated GaN microcantilever that utilizes piezoelectric polarization-induced changes in two-dimensional electron gas to transduce displacement with very high sensitivity. The piezotransistor demonstrated an ultra-high gauge factor of 8,700 while consuming an extremely low power of 1.36 nW, and transduced external excitation with a superior noise-limited resolution of 12.43 fm Hz(−1/2) and an outstanding responsivity of 170 nV fm(−1), which is comparable to the optical transduction limits. These extraordinary characteristics, which enabled unique detection of nanogram quantity of analytes using photoacoustic spectroscopy, can be readily exploited in realizing a multitude of novel sensing paradigms. |
format | Online Article Text |
id | pubmed-4918345 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-49183452016-07-07 Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy Talukdar, Abdul Faheem Khan, M. Lee, Dongkyu Kim, Seonghwan Thundat, Thomas Koley, Goutam Nat Commun Article Measurement of femtoscale displacements in the ultrasonic frequency range is attractive for advanced material characterization and sensing, yet major challenges remain in their reliable transduction using non-optical modalities, which can dramatically reduce the size and complexity of the transducer assembly. Here we demonstrate femtoscale displacement transduction using an AlGaN/GaN heterojunction field effect transistor-integrated GaN microcantilever that utilizes piezoelectric polarization-induced changes in two-dimensional electron gas to transduce displacement with very high sensitivity. The piezotransistor demonstrated an ultra-high gauge factor of 8,700 while consuming an extremely low power of 1.36 nW, and transduced external excitation with a superior noise-limited resolution of 12.43 fm Hz(−1/2) and an outstanding responsivity of 170 nV fm(−1), which is comparable to the optical transduction limits. These extraordinary characteristics, which enabled unique detection of nanogram quantity of analytes using photoacoustic spectroscopy, can be readily exploited in realizing a multitude of novel sensing paradigms. Nature Publishing Group 2015-08-10 /pmc/articles/PMC4918345/ /pubmed/26258983 http://dx.doi.org/10.1038/ncomms8885 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Talukdar, Abdul Faheem Khan, M. Lee, Dongkyu Kim, Seonghwan Thundat, Thomas Koley, Goutam Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
title | Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
title_full | Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
title_fullStr | Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
title_full_unstemmed | Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
title_short | Piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
title_sort | piezotransistive transduction of femtoscale displacement for photoacoustic spectroscopy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4918345/ https://www.ncbi.nlm.nih.gov/pubmed/26258983 http://dx.doi.org/10.1038/ncomms8885 |
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