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학술지 Synergetic Resonance Matching of a Microphone and a Photoacoustic Cell
Cited 13 time in scopus Download 44 time Share share facebook twitter linkedin kakaostory
저자
심주용, 안창근, 허철, 정광효, 정은주, 김봉규
발행일
201704
출처
Sensors, v.17 no.4, pp.1-10
ISSN
1424-8220
출판사
MDPI AG
DOI
https://dx.doi.org/10.3390/s17040804
협약과제
17ZS1300, 광간섭계 기반의 광음향 기술을 이용한 무채혈 혈당분석 원천기술 , 김봉규
초록
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.
키워드
Acoustic resonance, Mid-infrared spectroscopy, Photoacoustic spectroscopy
KSP 제안 키워드
Infrared spectroscopy(FT-IR in real time), Mid-infrared(MIR), Photoacoustic cell, Photoacoustic spectroscopy, Sensor system, Signal noise ratio(SNR), Signal-to-Noise, acoustic resonance, mid-infrared spectroscopy, resonant characteristics
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