Strain-rate and temperature dependent plastic yield in carbon nanotubes from ab initio calculations

被引：61

作者：

Dumitrica, T ^{[1
]}

Yakobson, BI

机构：

[1] Rice Univ, Ctr Nanoscale Sci & Technol, Dept Mech Engn & Mat Sci, Houston, TX 77251 USA

[2] Rice Univ, Dept Chem, Houston, TX 77251 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 15期

关键词：

D O I：

10.1063/1.1695630

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Lattice yield to tension within practical time and temperatures is determined by the probability of defect formation. Its rate in nanotubes depends in turn on the transition state and activation barrier for the Stone-Wales bond rotations. Systematic ab initio computations of the barriers for the tubes of various symmetries and radii led to accurate calculation of plastic yield strain as a function of temperature and test duration. (C) 2004 American Institute of Physics.

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页码：2775 / 2777

页数：3

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