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Sensors 2013, 13(7), 9388-9395; doi:10.3390/s130709388
Article

Effect of Tensile Strain on Thermal Conductivity in Monolayer Graphene Nanoribbons: A Molecular Dynamics Study

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1 School of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China 2 Centre for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China 3 The state Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China 4 School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, China
* Author to whom correspondence should be addressed.
Received: 14 May 2013 / Revised: 12 July 2013 / Accepted: 15 July 2013 / Published: 22 July 2013
(This article belongs to the Section Physical Sensors)
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Abstract

The thermal conductivity of monolayer graphene nanoribbons (GNRs) with different tensile strain is investigated by using a nonequilibrium molecular dynamics method. Significant increasing amplitude of the molecular thermal vibration, molecular potential energy vibration and thermal conductivity vibration of stretching GNRs were detected. Some 20%~30% thermal conductivity decay is found in 9%~15% tensile strain of GNR cases. It is explained by the fact that GNR structural ridges scatter some low-frequency phonons which pass in the direction perpendicular to the direction of GNR stretching which was indicated by a phonon density of state investigation.
Keywords: graphene nanoribbons; thermal conductivity; phonon graphene nanoribbons; thermal conductivity; phonon
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Zhang, J.; He, X.; Yang, L.; Wu, G.; Sha, J.; Hou, C.; Yin, C.; Pan, A.; Li, Z.; Liu, Y. Effect of Tensile Strain on Thermal Conductivity in Monolayer Graphene Nanoribbons: A Molecular Dynamics Study. Sensors 2013, 13, 9388-9395.

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