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

被引:23
|
作者
Zhang, Jianwei [1 ]
He, Xiaodong [2 ]
Yang, Lin [2 ]
Wu, Guoqiang [3 ]
Sha, Jianjun [3 ]
Hou, Chengyu [4 ]
Yin, Cunlu [1 ]
Pan, Acheng [1 ]
Li, Zhongzhou [1 ]
Liu, Yubai [1 ]
机构
[1] Dalian Univ Technol, Sch Elect Sci & Technol, Dalian 116024, Peoples R China
[2] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150080, Peoples R China
[3] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[4] Harbin Inst Technol, Sch Elect & Informat Engn, Harbin 150080, Peoples R China
来源
SENSORS | 2013年 / 13卷 / 07期
基金
中国国家自然科学基金;
关键词
graphene nanoribbons; thermal conductivity; phonon; SINGLE-LAYER GRAPHENE; RECTIFICATION;
D O I
10.3390/s130709388
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
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%approximate to 30% thermal conductivity decay is found in 9%approximate to 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.
引用
收藏
页码:9388 / 9395
页数:8
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