Pressure-dependent electrical conductivity of freestanding three-dimensional carbon nanotube network

被引：19
|
作者：
Camilli, Luca [1 ]
Pisani, Claudia [1 ]
Passacantando, Maurizio [2 ]
Grossi, Valentina [2 ]
Scarselli, Manuela [1 ]
Castrucci, Paola [1 ]
De Crescenzi, Maurizio [1 ]
机构：
[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
[2] Univ Aquila, Dipartimento Sci Fis & Chim, I-67100 Laquila, Italy
来源：
APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 18期
关键词：
SULFUR;
D O I：
10.1063/1.4804385
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The dependence of electrical conductivity on compression of a freestanding three-dimensional carbon nanotube (CNT) network is investigated. This macrostructure is made of mm-long and entangled CNTs, forming a random skeleton with open pores. The conductivity linearly increases with the applied compression. This behaviour is due to increase of percolating pathways-contacts among neighbouring CNTs-under loads that is highlighted by in situ scanning electron microscopy analysis. The network sustains compressions up to 75% and elastically recovers its morphology and conductivity during the release period. The repeatability coupled with the high mechanical properties makes the CNT network interesting for pressure-sensing applications. (c) 2013 AIP Publishing LLC.
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页数：3
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