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Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing

In this article, we present a simple and intuitive approach to create a handheld optoacoustic setup for near field measurements. A single piezoelectric transducer glued in between two sheets of polymethyl methacrylate (PMMA) facilitates nearfield depth profiling of layered media. The detector electr...

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Autores principales: Blumenröther, Elias, Melchert, Oliver, Kanngießer, Jonas, Wollweber, Merve, Roth, Bernhard
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539709/
https://www.ncbi.nlm.nih.gov/pubmed/31083637
http://dx.doi.org/10.3390/s19092195
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author Blumenröther, Elias
Melchert, Oliver
Kanngießer, Jonas
Wollweber, Merve
Roth, Bernhard
author_facet Blumenröther, Elias
Melchert, Oliver
Kanngießer, Jonas
Wollweber, Merve
Roth, Bernhard
author_sort Blumenröther, Elias
collection PubMed
description In this article, we present a simple and intuitive approach to create a handheld optoacoustic setup for near field measurements. A single piezoelectric transducer glued in between two sheets of polymethyl methacrylate (PMMA) facilitates nearfield depth profiling of layered media. The detector electrodes are made of indium tin oxide (ITO) which is both electrically conducting as well as optically transparent, enabling an on-axis illumination through the detector. By mapping the active detector area, we show that it matches the design form precisely. We also present a straightforward approach to determine the instrument response function, which allows to obtain the original pressure profile arriving at the detector. To demonstrate the validity of this approach, the measurement on a simple test sample is deconvolved with the instrument response function and compared to simulation results. Except for the sputter instrumentation, all required materials and instruments as well as the tools needed to create such a setup are available to standard scientific laboratories.
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spelling pubmed-65397092019-06-04 Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing Blumenröther, Elias Melchert, Oliver Kanngießer, Jonas Wollweber, Merve Roth, Bernhard Sensors (Basel) Article In this article, we present a simple and intuitive approach to create a handheld optoacoustic setup for near field measurements. A single piezoelectric transducer glued in between two sheets of polymethyl methacrylate (PMMA) facilitates nearfield depth profiling of layered media. The detector electrodes are made of indium tin oxide (ITO) which is both electrically conducting as well as optically transparent, enabling an on-axis illumination through the detector. By mapping the active detector area, we show that it matches the design form precisely. We also present a straightforward approach to determine the instrument response function, which allows to obtain the original pressure profile arriving at the detector. To demonstrate the validity of this approach, the measurement on a simple test sample is deconvolved with the instrument response function and compared to simulation results. Except for the sputter instrumentation, all required materials and instruments as well as the tools needed to create such a setup are available to standard scientific laboratories. MDPI 2019-05-12 /pmc/articles/PMC6539709/ /pubmed/31083637 http://dx.doi.org/10.3390/s19092195 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Blumenröther, Elias
Melchert, Oliver
Kanngießer, Jonas
Wollweber, Merve
Roth, Bernhard
Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing
title Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing
title_full Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing
title_fullStr Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing
title_full_unstemmed Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing
title_short Single Transparent Piezoelectric Detector for Optoacoustic Sensing—Design and Signal Processing
title_sort single transparent piezoelectric detector for optoacoustic sensing—design and signal processing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539709/
https://www.ncbi.nlm.nih.gov/pubmed/31083637
http://dx.doi.org/10.3390/s19092195
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