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Prospective of Conducting Polymer Nanowire for Gas Sensing Application to its Physical Scaling
Shirale D.J, Bangar M, Myung N.V, Chen W, Joshi G, Mulchandani A.
Published in Trans Tech Publications, Ltd.
Volume: 584
Pages: 224 - 228
The effect of physical scaling on one dimensional (1-D) conducting polypyrrole (Ppy) nanowire device has been successfully studied. The synthesis, electrical characterization and ammonia gas sensing with 1-D Ppy nanowire device have been carried out in the present investigation. Ppy nanowires having ~80 to ~200 nm in diameter were synthesized by electrochemical polymerization in alumina template and 1.77 to 3 µm Ppy nanowire length were maintain by varying the distance between electrodes gap. We further demonstrated that gas sensors based on 1-D Ppy nanowire having high aspect ratio (length to diameter ratio, L:D) exhibits good sensitivity towards ammonia, and provided a reliable detection at concentration as low as approximately 1 ppm based on principal of physical scaling co-related to response resistance.
About the journal
JournalAdvanced Materials Research
PublisherTrans Tech Publications, Ltd.
Open Access0