Shape factor for non-cylindrical nanowires

被引：25
|
作者：
Qi, W. H. [1 ]
Huang, B. Y. [2 ]
Wang, M. P. [1 ]
Yin, Z. M. [1 ]
Li, J. [3 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[3] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 13-16期
关键词：
shape effect; nanowire; melting temperature;
D O I：
10.1016/j.physb.2007.12.021
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The concept of shape factor, originally for non-spherical nanoparticles, has been generalized to nanowires with non-cylindrical shapes. The new shape factor is defined as the total exterior area ratio of nanowires between non-cylindrical and cylindrical shapes in identical volumes, which equals one for cylindrical shapes and is larger than one for non-cylindrical ones. Furthermore, the shape factor has been successfully introduced in the bond-energy model, which is originally for the melting temperature of cylindrical nanowires. The predicted melting temperature on Pd and Ni nanowires by the generalized bond-energy model with shape factor are more close to computation results than the original one. (C) 2007 Elsevier B.V. All rights reserved.
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页码：2386 / 2389
页数：4
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