Structure and contact angle of liquid 4He droplets on a Cs surface

被引：27

作者：

Ancilotto, F ^{[1
]}

Sartori, AM ^{[1
]}

Toigo, F ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Fis G Galilei, INFM, I-35131 Padua, Italy

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.58.5085

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By using a density-functional approach, we have studied the T=0 nonwetting behavior of liquid He-4 nanodroplets on a Cs surface. The minimum energy structure of the droplets is determined and its dependence upon size is investigated. The comparison with a simple model of droplet adsorption suggests a way to extrapolate our result to the experimentally accessible case of macroscopic droplets. In particular, a value for the contact angle of macroscopically thick droplets, which is an important parameter in wetting phenomena, is predicted. Our calculated value for the contact angle is in semiquantitative agreement with recent experimental observations.

引用

页码：5085 / 5092

页数：8

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