Coalescence of parallel finite length single-walled carbon nanotubes by heat treatment

被引：9

作者：

Yang, Xueming ^{[1
,2
]}

Qiao, Fangwei ^{[1
]}

Zhu, Xiaoxun ^{[1
]}

Zhang, Pu ^{[2
]}

Chen, Dongci ^{[1
]}

To, Albert C. ^{[2
]}

机构：

[1] N China Elect Power Univ, Dept Power Engn, Baoding 071003, Peoples R China

[2] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15260 USA

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2013年 / 74卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Nanostructures; Defects; Specific heat; Thermodynamic properties; STABILITY; JUNCTIONS;

D O I：

10.1016/j.jpcs.2012.11.006

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fusion of parallel finite length single-walled carbon nanotubes (SWCNTs) without initially introducing structural defects is investigated by molecular dynamics (MD) simulations. Three different models that impose different constraints are adopted to simulate the heat welding and coalescence of the parallel SWCNTs. It is found that the ultrathin as well as some larger diameter, finite length SWCNTs, for example (8,0) and (10,0) SWCNTs can be coalesced to become a unique single-walled tube solely via high temperature heat treatment. It is observed that the ends of the nanotubes are prone to close at high temperature during the high temperature treatment In addition, the fusion process and mechanism of parallel SWCNTs with different lengths and radii are discussed. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：436 / 440

页数：5

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