Journal
CURRENT APPLIED PHYSICS
Volume 11, Issue 1, Pages S350-S352Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2010.11.022
Keywords
Graphene; Nanocomposite; Smart material; Strain sensor
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To address the need for new smart hybrid materials, this paper presents graphene based nano composites which have piezoresistivity for strain sensor. Graphene/epoxy composites cast in a mold were fabricated to a composite strain sensor. The strain response of graphene/epoxy composites showed fairly symmetrical and reversible behavior, and the gauge factor obtained was about 11.4 within the range of 1000 micro-strain. The graphene/epoxy composite strain sensor showed much higher strain sensitivity than both carbon nanotubes (CNTs) composite strain sensors and the strain gauge made of high-quality graphene films. A contact area & resistance model of graphene was introduced to explain the higher piezoresistivity of graphene composites compared to CNTs composites. (C) 2010 Elsevier B. V. All rights reserved.
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