摘 要:
基于Hartree-Foek和密度泛函理论(DFT)混合近似下的第一性原理计算,系列地研究了单壁碳纳米管(扶手椅管、锯齿管、手性管)和单壁氮化硼纳米管的杨氏模量、卷曲形变能以及电子能带结构.分析了单壁碳纳米管的管径、管型和能隙宽度对其杨氏模量理论计算值的影响,给出了纳米管管径和手性对卷曲形变能的影响.[著者文摘]
关 键 词:
文章出处:
《南开大学学报:自然科学版》-2007年40卷3期 -21-26页
分 类 号:
文献标识码:
A
文章编号:
0465-7942(2007)03-0021-06
First-principle Calculations of Nanotubes
Wu Yang, Zhao Dengbing, Jin Qinghua,Wang Yufang, Li Baohui, Ding Datong ( College of Physics Science, Nankai University, Tianjin 300071, China )
Abstract:
Young modulus and strain energy of a series single wall carbon nanotubes and BN nanotubes were studied using ab-initio package CRYSTAL-03 within density-functional theory (DFT) approximation. It is found that Young modulus has correlation with diameter, chirality and energy gap of nanotubes. The result of strain energy was discussed and also reveals the correlation with diameter and chirality of nanotubes.[著者文摘]
Key words:
SWCNT ; SWBNNT ; young modulus ; strain energy ; density-functional theory (DFT)
基金资助:
国家自然科学基金(20474034) 致谢:感谢李彤雷博士给我们提供使用Crystal 03软件包的便利条件和各种无偿的帮助.

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