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Title: Ultrasensitive strain sensors made from metal-coated carbon nanofiller/epoxy composites
Authors: Hu, N.
Itoi, T.
Akagi, T.
Kojima, T.
Xue, J. 
Yan, C.
Atobe, S.
Fukunaga, H.
Yuan, W.
Ning, H.
Liu, Y.
Issue Date: Jan-2013
Citation: Hu, N., Itoi, T., Akagi, T., Kojima, T., Xue, J., Yan, C., Atobe, S., Fukunaga, H., Yuan, W., Ning, H., Surina, Liu, Y., Alamusi (2013-01). Ultrasensitive strain sensors made from metal-coated carbon nanofiller/epoxy composites. Carbon 51 (1) : 202-212. ScholarBank@NUS Repository.
Abstract: A set of resistance-type strain sensors has been fabricated from metal-coated carbon nanofiller (CNF)/epoxy composites. Two nanofillers, i.e., multi-walled carbon nanotubes and vapor growth carbon fibers (VGCFs) with nickel, copper and silver coatings were used. The ultrahigh strain sensitivity was observed in these novel sensors as compared to the sensors made from the CNFs without metal-coating, and conventional strain gauges. In terms of gauge factor, the sensor made of VGCFs with silver coating is estimated to be 155, which is around 80 times higher than that in a metal-foil strain gauge. The possible mechanism responsible for the high sensitivity and its dependence with the networks of the CNFs with and without metal-coating and the geometries of the CNFs were thoroughly investigated. © 2012 Published by Elsevier Ltd.
Source Title: Carbon
ISSN: 00086223
Appears in Collections:Staff Publications

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