Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Analysis of biomarkers with tunable infrared gas sensors

가변 파장형 적외선 가스 센서에 의한 생체표지자 분석

  • Yi, Seung Hwan (College of Convergence Technology, Korea National University of Transportation)
  • 이승환 (한국교통대학교 융합기술대학)
  • Received : 2021.08.26
  • Accepted : 2021.09.15
  • Published : 2021.09.30
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Abstract

In this study, biomarkers were analyzed and segmented using tunable infrared gas sensors after performing the principal component analysis. The free spectral range of the device under test (DUT) was around 30 nm and DUT-5580 yielded the highest output voltage property among the others. The biomarkers (isoprophyl alcohol, ethanol, methanol, and acetone solutions) were sequentially mixed with deionized water and their mists were carried into the gas chamber using high-purity nitrogen gas. A total of 17 different mixed gases were tested with three tunable infrared gas sensors, namely DUT-3144, DUT-5580, and DUT-8010. DUT-8010 resolved the infrared absorption spectra of whole mixed gases. Based on the principal component analysis with each DUT and their combinations, each mixed gas and the trends in increasing gas concentration could be well analyzed when the contributions of the eigenvalues of the first and second were higher than 70% and 10%, respectively, and their sum was greater than 90%.

Keywords

Acknowledgement

본 연구는 2018년도 한국연구재단의 지원 (No.2018R1D1A3B07047542)과 2020년도 한국교통대학교 지원을 통해 수행된 결과이다.

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