Piezoresistive behavior study on finger-sensing silicone rubber/graphite nanosheet nanocomposites

被引：289

作者：

Chen, Ling ^{[1
]}

Chen, Guohua ^{[1
]}

Lu, Liang ^{[1
]}

机构：

[1] Huaqiao Univ, Dept Mat Sci, Fujian 362021, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2007年 / 17卷 / 06期

关键词：

D O I：

10.1002/adfm.200600519

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel finger-sensing nanocomposite with remarkable and reversible piezoresistivity is successfully fabricated by dispersing homogeneously conductive graphite nanosheets (GNs) in a silicone rubber (SR) matrix. Because of the high aspect ratio of the graphite nanosheets, the nanocomposite displays a very low percolation threshold. The SR/GN nanocomposite with a volume fraction of conductive nanosheets closest to that for the percolation threshold presents a sharp positive-pressure coefficient effect of the resistivity under very low pressure, namely, in the finger-pressure range (0.3-0.7 MPa), whereby the abrupt transitive behavior of the nanocomposite is accounted for by an extension of the tunneling conduction theory which provides a good approximation of the piezoresistive effect.

引用

页码：898 / 904

页数：7

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