Wall thickness of single-walled carbon nanotubes and its Young's modulus

被引：24

作者：

Cai, J. ^{[1
]}

Wang, C. Y. ^{[2
]}

Yu, T. ^{[3
]}

Yu, S. ^{[3
]}

机构：

[1] N China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China

[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[3] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China

来源：

PHYSICA SCRIPTA | 2009年 / 79卷 / 02期

基金：

美国国家科学基金会;

关键词：

TOTAL-ENERGY CALCULATIONS; ELASTIC PROPERTIES; MECHANICS; EXCHANGE;

D O I：

10.1088/0031-8949/79/02/025702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Young's modulus of single-walled carbon nanotubes (SWCNTs) was calculated by a modern pseudo-potential ab initio method. Using different models for wall thickness, we found that the Young's modulus of an SWCNT varies in a wide range from 0.94 to 5.81 TPa. Here, an SWCNT's wall thickness was obtained by electronic structure calculation. Using the wall thickness, we obtained that the Young's modulus of an SWCNT is 1.06-1.16 TPa, which is in agreement with the experimental result of 1.20-1.25 TPa.

引用

页数：5

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