Ultrasensitive strain sensors made from metal-coated carbon nanofiller/epoxy composites

Hu, Ning, Itoi, Takaomi, Akagi, Taro, Kojima, Takashi, Xue, Junmin, Yan, Cheng, Atobe, Satoshi, Fukunaga, Hisao, Yuan, Weifeng, Ning, Huiming, Surina, Liu, Yaolu, & Alamusi (2013) Ultrasensitive strain sensors made from metal-coated carbon nanofiller/epoxy composites. Carbon, 51, pp. 202-212.

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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.

Impact and interest:

34 citations in Scopus
28 citations in Web of Science®
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ID Code: 70083
Item Type: Journal Article
Refereed: Yes
Keywords: carbon nanotube, composites, conductivity, sensor
DOI: 10.1016/j.carbon.2012.08.029
ISSN: 0008-6223
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Composite and Hybrid Materials (091202)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Copyright Owner: Copyright 2012 Elsevier Ltd.
Copyright Statement: NOTICE: this is the author’s version of a work that was accepted for publication in Carbon. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Carbon, [Volume 51, (January 2013)] DOI: 10.1016/j.carbon.2012.08.029
Deposited On: 10 Apr 2014 22:21
Last Modified: 12 Apr 2017 09:19

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