Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Sensing and Degradation Characteristics in the QCM Gas Sensor Coated with the PVC and PC

PVC 및 PC 혼합액을 코팅한 QCM 가스센서의 센싱 및 열화 특성

  • Jang, Kyung-Uk (Dept. of Automotive Maintenance Eng., Kyungwon College) ;
  • Kim, Myung-Ho (Dept. of Architecture Equipment Eng., Kyungwon College) ;
  • Lee, Joon-Ung (The Korea Institute of Electrical and Electronic Material Eng.)
  • 장경욱 (경원전문대학 자동차정비과) ;
  • 김명호 (경원전문대학 건축설비과) ;
  • 이준웅 (한국전기전자재료학회)
  • Published : 2000.04.28
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Abstract

In the recognition of the gases using the quartz crystal microbalance (QCM) coated with the film materials, it is important to obtain the recognition ability of gases, and the stability of film coated above the QCM. Especially, the thickness of film coated above the QCM is decreased according with the using circumstance and time of QCM gas sensor. Therefore, the sensing chararcteristics of film is changed with these. In this paper, we coated the lipid PC (Phosphatidyl Choline) materials varing with the blended amount of PVC(Poly Vinyl Chloride) and solution (Tetra Hydrofan:THF) above QCM to obtain the stability of lipid PC film. QCM gas sensors coated with film materials were measured the frequency change in the chamber of stationary gas sensing system injected 1-hexane, ethyl acetate, ethanol and benzene of $20{\mu}{\ell}$, respectively. We obtained the principal component analysis (PCA) from the frequency change due to the absorption of gas. Also, we measured the degradation characteristics of QCM gas sensor to show the properties of stability.

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