The defect location effect on thermal conductivity of graphene nanoribbons based on molecular dynamics

被引：37

作者：

Liu, Dongjing ^{[1
]}

Yang, Ping ^{[1
]}

Yuan, Xaioming ^{[1
]}

Guo, Juan ^{[1
]}

Liao, Ningbo ^{[1
]}

机构：

[1] Jiangsu Univ, Lab Adv Design, Mfg & Reliabil MEMS NEMS ODES, Zhenjiang 212013, Peoples R China

来源：

PHYSICS LETTERS A | 2015年 / 379卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Graphene nanoribbons; Defect location; Thermal conductivity; Molecular dynamic; CARBON NANOTUBES; RECTIFICATION;

D O I：

10.1016/j.physleta.2014.12.050

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The defect location effect on thermal conductivity of single-layer graphene nanoribbons is investigated. The length and width of pristine graphene nanoribbons are 12.3 nm and 5.112 nm in this paper. The results show the defect location has different levels of influence on thermal conductivity in horizontal and vertical directions. In vertical direction, the change of thermal conductivity is smaller than that in horizontal direction. The thermal conductivity of graphene nanoribbons shows some nonlinearity such as periodic trend when changing the defect location. It implies the chirality of zigzag graphene nanoribbons. In addition, phonon spectrum of atoms on the sides of the model is calculated. The results suggest the effect is greatly influenced by boundary scattering. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：810 / 814

页数：5

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