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Experimental Measurement of Angular and Overlap Dependence of Conduction between Carbon Nanotubes of Identical Chirality and Diameter

Chris J. Barnett, Christopher Evans, James E. McCormack, Cathren E. Gowenlock, Peter Dunstan, Wade Adams, Alvin Orbaek White Orcid Logo, Andrew Barron Orcid Logo

Nano Letters, Volume: 19, Issue: 8, Pages: 4861 - 4865

Swansea University Authors: Alvin Orbaek White Orcid Logo, Andrew Barron Orcid Logo

Abstract

Measurement of the angular and overlap dependence of the conduction between two identical carbon nanotubes (CNTs), with the same diameter and chirality, has only been possible through theoretical calculations; however, our observation of increased resistance adjacent to the junction between two CNTs...

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Published in: Nano Letters
ISSN: 1530-6984 1530-6992
Published: 2019
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa51710
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Abstract: Measurement of the angular and overlap dependence of the conduction between two identical carbon nanotubes (CNTs), with the same diameter and chirality, has only been possible through theoretical calculations; however, our observation of increased resistance adjacent to the junction between two CNTs facilitates such measurements. Since electrical resistance was found to increase with increased diameter ratio, applying 10 V to one of dissimilar diameter CNTs results in cleavage at the junction. Manipulation of the resulting identical CNTs (created by cutting a single CNT) allows for the direct measurement of the angular and parallel overlap conduction. Angular (13° < θ < 63°) dependence shows two minima (22° and 44°) and a maximum at 30°, and conduction between parallel CNTs increases with overall tip separation but shows a sinusoidal relationship with contact length, consistent with the concept of atomic scale registry.
Keywords: Multiwalled carbon nanotubes, manipulation, resistance, conduction
College: College of Engineering
Issue: 8
Start Page: 4861
End Page: 4865