Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1999.07g
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- Pages.3265-3267
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- 1999
Development of alcohol gas sensors measurable at room temperature
상온에서 측정 가능한 음주 측정용 알코올 가스 센서
- Jeon, Byung-Hyun (School of Electrical and Electronic Eng., Kyungnam university) ;
- Lee, Ju-Hyuk (School of Electrical and Electronic Eng., Kyungnam university) ;
- Kim, Seong-Jean (School of Electrical and Electronic Eng., Kyungnam university) ;
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Lee, Cheol-Jin
(Dpt. of Electrical Eng. Kunsan National University) ;
- Choi, Bok-Gil (Dpt. of Electrical Eng. KongJu National University)
- 전병현 (경남대학교 전기전자공학부) ;
- 이중혁 (경남대학교 전기전자공학부) ;
- 김성진 (경남대학교 전기전자공학부) ;
-
이철진
(군산대학교 전기공학과) ;
- 최복길 (공주대하교 전기공학과)
- Published : 1999.07.19
Abstract
Capacitance-type alcohol gas sensors using porous silicon (PS) layer as sensitive film were fabricated to measure low alcohol gas concentration. Though sensors using porous silicon layer have show high sensitivity by large internal surface area, there is still much room for improvement to measure low breath alcohol concentration especially at room temperature. In this work, to discuss the response properties against exposure to organic vapor for breath alcohol measurements on the basis of experimental results. we measured the variation of the capacitance for the range of 0 to 0.5% alcohol concentration, and observed the improvement of sensitivity by illumination of UV light. In addition, the effect of CO2 and N2 gases involved commonly in exhaling breath was estimated, and the same procedure against methanol vapor was executed to compare qualitatively with the capacitance characteristics by alcohol vapor.
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