Abstract
The design and development of a compact wireless gas sensor with a surface modified multiwalled carbonnanotube (f-CNT) chemiresistor as the sensing element is presented in this paper.f-CNT/polymer composite sensing film is patterned on a printed circuit board and isintegrated to the wireless system. The change in resistance of the CNT/polymer compositefilm due to exposure of different gases is utilized as the principle of this gas sensor. Theresponse for different organic vapors are evaluated and it is observed that thef-CNT/PMMA composite film shows fast response and change in resistance of the order of102–103 due to its surface modification.
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