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Proceedings Paper

Surface modified polysiloxane a sensitive coatings for QCM sensors
Author(s): Zhihua Ying; Yadong Jiang; Xiaosong Du; Guangzhong Xie; Yajie Yang; Huiling Tai
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Paper Abstract

A quartz crystal microbalance (QCM) gas sensor with polysiloxane sensing film was fabricated for detection of dimethyl methyl phosphonate (DMMP), the simulant of chemical warfare agents (CWAs). Poly(methyl-3,3,3-trifluoropropylsiloxane) (PMTFPS) was oxygen plasma treated and then grafted with sulfosalicylic acid (SSA). The resultant SSA modified PMTFPS (SMP) was drop-coated on the electrode of QCM. Compared with the PMTFPS-QCM and SSA-QCM sensors, the sensitivity of SMP-QCM sensor was much higher. However, the SMP films showed less resistance to humidity variations. The selectivity of SMP-QCM sensor to DMMP was also investigated, and better results was showed out after SSA grafted.

Paper Details

Date Published: 11 March 2008
PDF: 4 pages
Proc. SPIE 6984, Sixth International Conference on Thin Film Physics and Applications, 69843O (11 March 2008); doi: 10.1117/12.792242
Show Author Affiliations
Zhihua Ying, Univ. of Electronic Science and Technology of China (China)
Yadong Jiang, Univ. of Electronic Science and Technology of China (China)
Xiaosong Du, Univ. of Electronic Science and Technology of China (China)
Guangzhong Xie, Univ. of Electronic Science and Technology of China (China)
Yajie Yang, 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. 6984:
Sixth International Conference on Thin Film Physics and Applications

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