Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 214, Issue -, Pages 74-80Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2014.04.017
Keywords
Silver nanowires; Fiber optic sensor; Ammonia sensor
Funding
- DST, New Delhi, India [SR/FTP/PS-43/2009]
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Silver nanowires were synthesized by glycerol mediated process with the assistance of polyvinyl pyrrolidone. The grown nanowires have preferential orientation of [1 1 1]. Purified silver nanowires showed the absorptions at 400 and 352 nm in UV-vis-NIR spectrum. The average width and length of the purified silver nanowires were measured as 60 nm and 7 pm, respectively, using the scanning electron microscopy. The ammonia vapor sensitivity of the dispersed silver nanowires coated on cladding removed polymethyl methacrylate fiber was calculated to be 0.17 counts/ppm at room temperature. The response and recovery times were found to be 70 and 80 min, respectively, for 500 ppm ammonia vapor concentration in the absence of carrier gas. (C) 2014 Elsevier BM. All rights reserved.
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