首页 | 本学科首页   官方微博 | 高级检索  
     

碳纳米管高温热稳定性与结构的关系
引用本文:姚振华,朱长纯,程敏,刘君华.碳纳米管高温热稳定性与结构的关系[J].液晶与显示,2002,17(1):49-54.
作者姓名:姚振华  朱长纯  程敏  刘君华
作者单位:西安交通大学,电子科学与技术系,陕西,西安,710049
基金项目:国家自然科学基金,国家博士点基金资助项目 ( 6 0 0 36 0 1 6,5 0 0 70 1 6 )
摘    要:使用分子动力学方法对单壁碳纳米管高温下的结构进行了计算机模拟。对扶手椅结构(10,10)和(20,20)的单壁碳纳米管进行了模拟,结果表明,碳纳米管开关端由于能量弛豫过程,直径比内部略大,在温度逐渐升高之后,构成纳米管的碳原子逐渐偏离晶格位置,小直径的碳纳米管在3000K温度之下结构是稳定的;直径小的碳纳米管的高温热稳定性比直径大的碳纳米管要好。

关 键 词:碳纳米管  分子动力学  热稳定性  高温  结构  计算机模拟
文章编号:1007-2780(2002)01-0049-06
修稿时间:2001年8月22日

Molecular Dynamics Research on High Temperature Thermo-stability of Carbon Nanotube
YAO Zhen-hua,ZHU Chang-chun,CHENG Min,LIU Jun-hua.Molecular Dynamics Research on High Temperature Thermo-stability of Carbon Nanotube[J].Chinese Journal of Liquid Crystals and Displays,2002,17(1):49-54.
Authors:YAO Zhen-hua  ZHU Chang-chun  CHENG Min  LIU Jun-hua
Abstract:The structure of Single-wall Carbon Nanotube (SWCNT) in high temperature is simulated by using molecular dynamics (MD). The MD simulation was carried out on armchaired SWCNT (10, 10) and (20, 20), respectively. The results show that the diameter of SWCNT at open end is slightly larger than that at body part due to energy relaxation. The carbon atoms deviate from the original lattice location when the temperature is rising. It can be seen that the structure of SWCNT with small diameter is steady below 3 000 K, and the thermo-stability of nanotubes with small diameter is better than that with large diameter.
Keywords:carbon nanotube  molecular dynamics  thermo-stability
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号