YOUNGS LAW WITH GRAVITY

被引：35

作者：

BLOKHUIS, EM ^{[1
]}

SHILKROT, Y ^{[1
]}

WIDOM, B ^{[1
]}

机构：

[1] CORNELL UNIV,BAKER LAB,DEPT CHEM,ITHACA,NY 14853

来源：

MOLECULAR PHYSICS | 1995年 / 86卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/00268979500102461

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The observation that Young's law for the contact angle of a liquid droplet on a substrate should continue to hold when the droplet is deformed by gravity is to some extent counter-intuitive, which has led to doubts and controversy in the literature. We show, in agreement with others, that Young's law holds in the presence of gravity. First, in a numerical illustration based on the classic tables by Bashforth and Adams, we see that the system's free energy for a fixed droplet volume is indeed at a minimum when, to within the numerical precision, the contact angle is as given by Young's law. We then give a transparent analytical derivation of Young's law by minimizing the free energy as a functional of the droplet shape with gravity included.

引用

页码：891 / 899

页数：9

共 20 条

[1]

[Anonymous], 1982, MOL THEORY CAPILLARI

[2] EQUILIBRIUM SHAPES OF CRYSTALS IN A GRAVITATIONAL-FIELD - CRYSTALS ON A TABLE [J].