EVAPORATION PREEMPTS COMPLETE WETTING

被引:27
作者
ELBAUM, M
LIPSON, SG
WETTLAUFER, JS
机构
[1] TECHNION ISRAEL INST TECHNOL, DEPT PHYS, IL-32000 HAIFA, ISRAEL
[2] UNIV WASHINGTON, APPL PHYS LAB HN 10, SEATTLE, WA 98105 USA
来源
EUROPHYSICS LETTERS | 1995年 / 29卷 / 06期
关键词
D O I
10.1209/0295-5075/29/6/005
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
volatile liquid wetting a substrate forms a thick, uniform film in equilibrium with a saturated vapor phase. We show that under evaporating conditions such a liquid is effectively non-wetting, i.e. stable as a droplet on top of a thin film. This is in agreement with recent observations. Here we calculate the contact angle of the droplet as a function of the liquid-vapor surface tension and the partial pressure. This effect will be useful as a means of probing the microscopic interfacial forces involved in wetting via macroscopic measurements.
引用
收藏
页码:457 / 462
页数:6
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