Synergetic Resonance Matching of a Microphone and a Photoacoustic CellReportar como inadecuado


Synergetic Resonance Matching of a Microphone and a Photoacoustic Cell


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Bio-Medical IT Convergence Research Department, Electronics and Telecommunications Research Institute, Daejeon 34129, Korea





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Academic Editor: W. Rudolf Seitz

Abstract We propose an approach to match the resonant characteristics of a photoacoustic cell with that of a microphone in order to enhance the signal-to-noise ratio in the photoacoustic sensor system. The synergetic resonance matching of a photoacoustic cell and a microphone was achieved by observing that photoacoustic cell resonance is merged with microphone resonance, in addition to conducting numerical and analytical simulations. Using this approach, we show that the signal-to-noise ratio was increased 3.5-fold from the optimized to non-optimized cell in the photoacoustic spectroscopy system. The present work is expected to have a broad impact on a number of applications, from improving weak photoacoustic signals in photoacoustic spectroscopy to ameliorating various sensors that use acoustic resonant filters. View Full-Text

Keywords: photoacoustic spectroscopy; mid-infrared spectroscopy; acoustic resonance photoacoustic spectroscopy; mid-infrared spectroscopy; acoustic resonance





Autor: Joo Yong Sim, Chang-Geun Ahn, Chul Huh, Kwang Hyo Chung, Eun-Ju Jeong and Bong Kyu Kim *

Fuente: http://mdpi.com/



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