A Highly Elastic, Capacitive Strain Gauge Based on Percolating Nanotube Networks

被引：456

作者：

Cohen, Daniel J. ^{[1
]}

Mitra, Debkishore ^{[1
]}

Peterson, Kevin ^{[2
]}

Maharbiz, Michel M. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 04期

基金：

美国国家科学基金会;

关键词：

Nanotubes percolation; sensor; strain; elastomer; COMPOSITES; TRANSPARENT; RUBBER;

D O I：

10.1021/nl204052z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present a highly elastic strain gauge based on capacitive sensing of parallel, carbon nanotube-based percolation electrodes separated by a dielectric elastomer. The fabrication, relying on vacuum filtration of single-walled carbon nanotubes and hydrophobic patterning of silicone, is both rapid and inexpensive. We demonstrate reliable, linear performance over thousands of cycles at up to 100% strain with less than 3% variability and the highest reported gauge factor for a device of this class (0.99). We further demonstrate use of this sensor in a robotics context to transduce joint angles.

引用

页码：1821 / 1825

页数：5

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