Chemical Gas Sensors Based On Nanowires

Details Chemical Gas Sensors Based On Nanowires Chemical Gas Sensors Based On Nanowires

2008-04-30

arxiv.org/abs/0804.4828v1

Nanowire Research Progress, Chapter 3, Nova Science Publisher 2008

Physics

Condensed Matter

Materials Science

33 pages 17 figures

Scientific paper

Chemical gas sensors based on nanowires can find a wide range of applications in clinical assaying, environmental emission control, explosive detection, agricultural storage and shipping, and workplace hazard monitoring. Sensors in the forms of nanowires are expected to have significantly enhanced performance due to high surface-volume ratio and quasi-one-dimensional confinement in nanowires. Indeed, chemical gas sensors based on nanowires with a ppb level sensitivity have been demonstrated. In this review, the fundamental aspects on (i) methods of nanowire synthesis (ii) performance of nanowire sensors, (iii) chemiresistors, transistor sensors, and their sensing mechanism, and (iv) assembly technologies will be summarized and discussed. The prospects of the future research on chemical gas sensors based on nanowires will be also addressed.

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