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

Sensors

Jianwei Zhang³  Xiaodong He²  Lin Yang²  Guoqiang Wu⁴  Jianjun Sha⁴  Chengyu Hou¹  Cunlu Yin³  Acheng Pan³  Zhongzhou Li³ 

[1] School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150080, China; E-Mail:;Centre for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China; E-Mail:;School of Electronic Science and Technology, Dalian University of Technology, Dalian 116024, China; E-Mails:;The state Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China; E-Mails:

关键词: graphene nanoribbons;    thermal conductivity;    phonon;   

DOI  :  10.3390/s130709388

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.