Influence of humidity on CO2 gas sensors based on Polyetherimide polymer film

Ting Kang; Guangzhong Xie; Yong Zhou; Tao Xie; Huiling Tai

doi:10.1117/12.2069683

2 September 2014 Influence of humidity on CO₂ gas sensors based on polyetherimide polymer film

Ting Kang, Guangzhong Xie, Yong Zhou, Tao Xie, Huiling Tai

Proceedings Volume 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 92800V (2014) https://doi.org/10.1117/12.2069683
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

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.

Citation Download Citation

Ting Kang, Guangzhong Xie, Yong Zhou, Tao Xie, and Huiling Tai "Influence of humidity on CO₂ gas sensors based on polyetherimide polymer film", Proc. SPIE 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 92800V (2 September 2014); https://doi.org/10.1117/12.2069683

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