学术
摘 要:
对Ag纳米线的熔化和过热作了研究，提出了一种经典热力学模型对Ag纳米线的过热机制作了阐述；当考虑到低能Ag／Ni界面的作用时，推导了过热的定量表达式，说明了过热与纳米线的半径和界面能有密切关系．[著者文摘]
文章出处:
《海南师范学院学报：自然科学版》-2007年20卷4期 -335-338页
分 类 号:
文献标识码:
A
文章编号:
1671-8747（2007）04-0335-04
Thermodynamic model of superheating in Ag nanowires
Shi Duanwen, He Liangming （ 1. Department of Physics, Hainan Normal University,Haikou 571158, China; 2. College of Physics and Electronic Engineering,Guangxi University for Nationalities ,Nanning 530006,China）
Abstract:
In this paper, a classical thermodynamic model was given to describe the superheating of Ni-coated Ag nanowires. The nucleation and growth of meh phase are both suppressed by the low energy Ag/Ni interfaces in coated Ag wires. The suppression of meh growth is critical and plays a major role in the process of melting. The thermodynamic analysis gives a quantitative relation of superheating with the wire radius R and the contact angle 0. The superheating of coated wires increases with decreasing R of Ag wire. The result of the thermodynamic model was consistent with previous work of MD simulations.[著者文摘]
Key words:
nanowires ; mehing ; superheating
基金资助:
海南省自然科学基金项目（50740）;海南师范大学博士科研启动基金资助项目（37120158）
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