多壁碳纳米管弯曲导致的扭转  

Twisting induced by bending of multiwalled carbon nanotubes

作　　者：李晓雁[1] 杨卫[1] 

机构地区：[1]清华大学工程力学系,北京100084

出　　处：《物理》2007年第9期664-666,共3页Physics

基　　金：国家重点基础研究发展计划(批准号:2004CB619304);国家自然科学基金(批准号:10332020;10121202)资助项目

摘　　要：文章介绍了多壁碳纳米管弯曲的分子动力学模拟,从原子尺度上解释了由于屈曲失稳而导致的起皱现象,并发现多壁碳纳米管弯曲时会呈现出非线性的力学响应。同时,在模拟过程中,观察到了弯曲诱发扭转的现象,并揭示出扭转变形的内在起因是曲率诱导的晶格错配。We present recent molecular dynamics simulations for bending of muhiwalled carbon nanotubes. The rippling caused by the buckling is described at the atomistic level. It is demonstrated that such nanotubes exhibit nonlinear mechanical responses when subjected to bending deformations. Notably, a twisting mode arising from curvature-induced lattice mismatch emerges with the rippling in the bent nanotubes.

关 键 词：多壁碳纳米管 起皱 扭转 分子动力学 

分 类 号：O482.1[理学—固体物理]