Extracting the interfacial free energy and anisotropy from a smooth fluctuating dividing surface
Extracting the interfacial free energy and anisotropy from a smooth fluctuating dividing surface
复制标题
从平滑波动的分界面中提取界面自由能和各向异性
DOI:
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
G. A. Tribello
中科院分区:
文献类型:
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作者:
E. Baldi;M. Ceriotti;G. A. Tribello
Interfaces between different materials and phases play a crucial role in many physical and chemical phenomena. When performing simulations of matter at the atomic scale, however, it is often not trivial to characterize these interfaces, particularly when they are rough or diffuse. Here we discuss a generalization of a construction, due to Willard and Chandler, that allows one to obtain a smooth dividing surface that follows the irregular, ever changing shape of these fluctuating interfaces. We show how this construction can be used to study the surface that separates a solid material from its melt and how analyses of the Fourier modes for the capillary fluctuations of this instantaneous dividing surface can be performed. This particular analysis is useful as one can compute the specific free energy excess of the interface, and its dependence on orientation relative to the bulk phases, from the average amplitude of the Fourier modes. We therefore discuss the efficiency of this approach, both in terms of system size and statistical sampling.
DOI:
10.1021/jp909219k
发表时间:
2010-02-11
期刊:
The journal of physical chemistry. B
影响因子:
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作者:
Willard AP;Chandler D
通讯作者:
Chandler D
影响因子:
3.7
作者:
Angioletti-Uberti, Stefano;Ceriotti, Michele;Finnis, Mike W.
通讯作者:
Finnis, Mike W.