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Journal of Nanomaterials
Volume 2016, Article ID 6093673, 7 pages
http://dx.doi.org/10.1155/2016/6093673
Research Article

Thermal Transport of Flexural and In-Plane Phonons Modulated by Bended Graphene Nanoribbons

1School of Science, Hunan University of Technology, Zhuzhou 412008, China
2Hunan Province Higher Education Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments, University of Science and Technology, Changsha 410004, China
3Department of Applied Physics, Hunan University, Changsha 410082, China

Received 26 December 2015; Accepted 7 April 2016

Academic Editor: Yasuhiko Hayashi

Copyright © 2016 Changning Pan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ballistic thermal transport properties are investigated comparatively for out-of-plane phonon modes (FPMs) and in-plane phonon modes (IPMs) in bended graphene nanoribbons (GNRs). Results show that the phonon modes transports can be modulated separately by the phonon dispersion mismatch between armchair and zigzag GNRs in considered system. The contribution of FPMs to total thermal conductance is larger than 50% in low temperature for perfect GNRs. But it becomes less than 20% in the bended GNRs. Furthermore, this contribution can be modulated by changing the structural parameters of the bended GNRs. The result is useful for the design of thermal or thermoelectric nanodevices in future.