Preparation of piezoresistive nano smart hybrid material based on graphene

作者：Kim Young Ju; Cha Ju Young; Ham Heon; Huh Hoon; So Dae Sup; Kang Inpil^*

来源：Current Applied Physics, 2011, 11(1): S350-S352.

DOI：10.1016/j.cap.2010.11.022

• Graphene
• Nanocomposite
• Smart material
• Strain sensor

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.

• 出版日期2011-1