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Park, Young-Bin
Functional Intelligent Materials Lab (FIMLab)
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Transparent graphene films with a tunable piezoresistive response

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Title
Transparent graphene films with a tunable piezoresistive response
Author
Hwang, Sang-HaAhn, Hyo-JinYoon, Jong-ChulJang, Ji-HyunPark, Young-Bin
Keywords
Adhesion forces; Coating density; Design optimization; Fabrication method; High gauge factors; Piezo-resistive sensors; Strain sensitivity; Transparent graphene
Issue Date
2013-11
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY C, v.1, no.43, pp.7208 - 7214
Abstract
We demonstrate a graphene-coated polymer film as a transparent piezoresistive strain sensor. Strain sensitivity was tuned by controlling the thickness and density of the graphene layer as well as the adhesion force between graphene and the substrate. Chemically reducing the graphene oxide, thereby maximizing its adhesion to the substrate, while minimizing the coating density and thickness resulted in excellent transparency and high gauge factors. The fabrication method presented allows design optimization of transparent, high-performance, and sensitivity-tunable piezoresistive sensors, which can make inroads into such applications as wide-area strain sensors, self-sensing flexible electronics, and intelligent structural health monitoring.
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DOI
10.1039/c3tc31177e
ISSN
2050-7526
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MNE_Journal Papers
ECHE_Journal Papers
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