Kink Formation and Motion in Carbon Nanotubes at High Temperatures

作     者：J. Y. Huang S. Chen Z. F. Ren Z. Q. Wang D. Z. Wang M. Vaziri Z. Suo G. Chen M. S. Dresselhaus 

作者机构：Department of Physics Boston College Chestnut Hill Massachusetts 02467 USA Department of Physics University of Michigan—Flint Flint Michigan 48502 USA Division of Engineering and Applied Sciences Harvard University Cambridge Massachusetts 02138 USA Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA Department of Physics and Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2006年第97卷第7期

页      面：075501-075501页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

主　　题：.tensile Longitudinal vacancy PRL week Spiral high temperatures kinks climb Massachusetts USA kink motion universal plastic deformation dislocation glide 

摘      要：We report that kink motion is a universal plastic deformation mode in all carbon nanotubes when being tensile loaded at high temperatures. The kink motion, observed inside a high-resolution transmission electron microscope, is reminiscent of dislocation motion in crystalline materials: namely, it dissociates and multiplies. The kinks are nucleated from vacancy creation and aggregation, and propagate in either a longitudinal or a spiral path along the nanotube walls. The kink motion is related to dislocation glide and climb influenced by external stress and high temperatures in carbon nanotubes.