Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Talukdar, Abdul, Faheem Khan, M., Lee, Dongkyu, Kim, Seonghwan, Thundat, Thomas, Koley, Goutam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
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
_version_ 1782439107116400640
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
work_keys_str_mv AT talukdarabdul piezotransistivetransductionoffemtoscaledisplacementforphotoacousticspectroscopy
AT faheemkhanm piezotransistivetransductionoffemtoscaledisplacementforphotoacousticspectroscopy
AT leedongkyu piezotransistivetransductionoffemtoscaledisplacementforphotoacousticspectroscopy
AT kimseonghwan piezotransistivetransductionoffemtoscaledisplacementforphotoacousticspectroscopy
AT thundatthomas piezotransistivetransductionoffemtoscaledisplacementforphotoacousticspectroscopy
AT koleygoutam piezotransistivetransductionoffemtoscaledisplacementforphotoacousticspectroscopy