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

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Blumenröther, E.; Melchert, O.; Kanngießer, J.; Wollweber, M.; Roth, B.: Single Transparent Piezoelectric Detector for Optoacoustic Sensing - Design and Signal Processing. In: Sensors 19 (2019), Nr. 9, 2195. DOI: https://doi.org/10.3390/s19092195

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Sum total of downloads: 44




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Abstract: 
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.
License of this version: CC BY 4.0 Unported
Document Type: article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Fakultät für Mathematik und Physik

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1 image of flag of Germany Germany 41 93.18%
2 image of flag of United States United States 2 4.55%
3 image of flag of China China 1 2.27%

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