Mechanism for the Compressive Strain Induced Oscillations in the Conductance of Carbon Nanotubes

Singh, LT and Bhattacharyya, S and Singh, Abhishek K and Nanda, KK (2013) Mechanism for the Compressive Strain Induced Oscillations in the Conductance of Carbon Nanotubes. In: PHYSICAL REVIEW LETTERS, 110 (9).

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Abstract

We report on the monotonic increase and the oscillation of electrical conductance in multiwalled carbon nanotubes with compressive strain. Combined experimental and theoretical analyses confirm that the conductance variation with strain is because of the transition from sp(2) to configurations that are promoted by the interaction of walls in the nanotubes. The intrawall interaction is the reason for the monotonic increase in the conduction, while the oscillations are attributable to interwall interactions. This explains the observed electromechanical oscillation in multiwalled nanotubes and its absence in single-walled nanotubes, thereby resolving a long-standing debate on the interpretation of these results. Moreover, the current carrying capability of nanotubes can be enhanced significantly by controlling applied strains. DOI: 10.1103/PhysRevLett.110.095504

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW LETTERS
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copyright for this article belongs to AMER PHYSICAL SOC, USA
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	28 Mar 2013 12:06
Last Modified:	28 Mar 2013 12:06
URI:	http://eprints.iisc.ac.in/id/eprint/46246

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