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Mechanical and electrical contact resistance characteristics of a cellular assembly of carbon nanotubes

Kiran, MSRN and Ramamurty, U and Misra, Abha (2012) Mechanical and electrical contact resistance characteristics of a cellular assembly of carbon nanotubes. In: NANOTECHNOLOGY, 24 (1).

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Official URL: http://dx.doi.org/10.1088/0957-4484/24/1/015707

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.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to IOP PUBLISHING LTD, ENGLAND
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Depositing User: Francis Jayakanth
Date Deposited: 22 Jan 2013 05:38
Last Modified: 22 Jan 2013 05:38
URI: http://eprints.iisc.ac.in/id/eprint/45631

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