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Proceedings Paper

Novel vapor sensor based on chemical coupling effect of composite
Author(s): Xiangdong Chen; Daben Yang; Yadong Jiang; Zhiming Wu; Shaohong Wang; Dan Li
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Paper Abstract

A novel sensing material has been developed for constructing a sensor of solvent vapours using chemical coupling effect of composite, which is different from conventional electron-moving chemiresistors for use as gas sensors. The composites consisting of polymer loaded with conductive filler near the percolation threshold exhibit sensitive characters comparable to that of conventional semiconductor gas sensor but can be realized with much simpler technology and operated at room temperature. This sensor can also obtain better selectivity by choosing different polymer matrix. Theoretic analysis and experimental results show sensitive properties of composite sensor greatly depend on composition of composite and grain size of conducting particles. In general resistance variation R/Rin the presence of vapor is more for higher volume fraction offiller and larger grain size of conducting particles.

Paper Details

Date Published: 14 February 1997
PDF: 8 pages
Proc. SPIE 3040, Smart Structures and Materials 1997: Smart Materials Technologies, (14 February 1997); doi: 10.1117/12.267122
Show Author Affiliations
Xiangdong Chen, Univ. of Electronic Science and Technology (China)
Daben Yang, Univ. of Electronic Science and Technology (China)
Yadong Jiang, Univ. of Electronic Science and Technology (China)
Zhiming Wu, Univ. of Electronic Science and Technology (China)
Shaohong Wang, Univ. of Electronic Science and Technology (China)
Dan Li, Univ. of Electronic Science and Technology (China)


Published in SPIE Proceedings Vol. 3040:
Smart Structures and Materials 1997: Smart Materials Technologies
Wilbur C. Simmons; Ilhan A. Aksay; Dryver R. Huston, Editor(s)

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