Effects of vacancies on interwall spacings of multi-walled carbon nanotubes

被引：0
|
作者：
Ming-du Ma
Jefferson Zhe Liu
Li-feng Wang
Lu-ming Shen
Quan-shui Zheng
机构：
[1] Tsinghua University,Department of Engineering Mechanics
[2] Monash University,Department of Mechanical and Aerospace Engineering
[3] Massachusetts Institute of Technology,Department of Mechanical Engineering
[4] University of Sydney,School of Civil Engineering
来源：
Journal of Zhejiang University-SCIENCE A | 2010年 / 11卷
关键词：
Multi-walled carbon nanotubes (MWCNTs); Noise carbon nanotubes; Electron beam irradiation; Defects; TB383;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We use molecular dynamics (MD) simulations to study the effects of vacancies on tube diameters and interwall spacings of multi-walled carbon nanotubes (MWCNTs). Two types of vacancies, double vacancy and three dangling-bond (3DB) single vacancy, are identified to have opposite effects on the tube size change, which explains the inconsistency of the experimentally measured interwall spacings of MWCNTs after electron beam irradiation. A theoretical model to quantitatively predict the shrunk structures of the irradiated MWCNTs is further developed. We also discuss the fabrications of prestressed MWCNTs, in which reduced interwall spacings are desired to enhance the overall elastic modulus and strength.
引用
收藏
页码：714 / 721
页数：7
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