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Proceedings Paper

Influence of humidity on CO2 gas sensors based on Polyetherimide polymer film
Author(s): Ting Kang; Guangzhong Xie; Yong Zhou; Tao Xie; Huiling Tai
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Paper Abstract

Quartz Crystal Microbalance (QCM) coated with polyetherimide (PEI) by spin coating method was applied for carbon dioxide (CO2) gas detection at room temperature in this study. The experiments were performed in dry and humid air atmospheres, and the results revealed that the prepared CO2 sensor in moisture circumstance exhibited a larger sensing response than that at dry condition. An enhanced sensing response took place for CO2 detection with the existence of water molecules. The effect of different humidity on QCM sensor performances was investigated as well in this paper. A curve, which displayed a proportional relationship between sensing response and water vapor concentration, was obtained. Moreover, the relevant sensing mechanisms were investigated.

Paper Details

Date Published: 2 September 2014
PDF: 6 pages
Proc. SPIE 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 92800V (2 September 2014); doi: 10.1117/12.2069683
Show Author Affiliations
Ting Kang, Univ. of Electronic Science and Technology of China (China)
Guangzhong Xie, Univ. of Electronic Science and Technology of China (China)
Yong Zhou, Univ. of Electronic Science and Technology of China (China)
Tao Xie, Univ. of Electronic Science and Technology of China (China)
Huiling Tai, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9280:
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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