Mechanical and electrical contact resistance characteristics of a cellular assembly of carbon nanotubes
Date
2013
Authors
Mangalampalli, S.R.N. Kiran
Ramamurty, U
Misra, Abha
Journal Title
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Volume Title
Publisher
Institute of Physics Publishing
Abstract
We employ nanoindentation coupled with electrical contact resistance measurements for simultaneous characterization of the electrical and mechanical behaviors of a cellular assembly of carbon nanotubes (CNTs). Experimental results reveal two different responses that correspond to relatively dense and porous regions of the cellular structure. Distinct nonlinear electron transport characteristics are observed, which mainly originate from diffusive conductance in the CNT structure. In the denser region, differential conductance shows asymmetric minima at lower bias, implying that conductivity mainly results from bulk tunneling. However, the porous regions show insignificant differential conduction as opposed to the denser region.
Description
Keywords
Keywords: Cellular assemblies; Cellular structure; Differential conductances; Electrical contact resistance; Electron transport; Mechanical behavior; Carbon nanotubes; Current voltage characteristics
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Source
Nanotechnology
Type
Journal article
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2037-12-31