Influence of chirality on the thermal conductivity of single-walled carbon nanotubes

被引：14
|
作者：
Feng Ya [1 ,2 ]
Zhu Jie [1 ]
Tang Da-Wei [1 ]
机构：
[1] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 08期
基金：
中国国家自然科学基金;
关键词：
single-walled carbon nanotube; thermal conductivity; chiral angle; molecular dynamics simulation; MOLECULAR-DYNAMICS; HYDROCARBONS; DEPENDENCE; SIMULATION;
D O I：
10.1088/1674-1056/23/8/083101
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The influence of chirality on the thermal conductivity of single-walled carbon nanotubes (SWNTs) is discussed in this paper, using a non-equilibrium molecular dynamics (NEMD) method. The tube lengths of the SWNTs studied here are 20, 50, and 100 nm, respectively, and at each length the relationship between chiral angle and thermal conductivity of a SWNT is revealed. We find that if the tube length is relatively short, the influence of chirality on the thermal conductivity of a SWNT is more obvious and that a SWNT with a larger chiral angle has a greater thermal conductivity. Moreover, the thermal conductivity of a zigzag SWNT is smaller than that of an armchair one. As the tube length becomes longer, the thermal conductivity increases while the influence of chirality on the thermal conductivity decreases.
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页数：7
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