Evaporation Preempts Complete Wetting
Evaporation Preempts Complete Wetting
复制标题
蒸发抢先完全润湿
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
J. Wettlaufer
中科院分区：
文献类型：
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作者：
M. Elbaum;S. Lipson;J. Wettlaufer
润湿基底的挥发性液体形成与饱和蒸气相平衡的厚的均匀膜。我们表明，在蒸发条件下，这样的液体是有效的非润湿，即稳定的薄膜顶部的液滴。这与最近的观察是一致的。在这里，我们计算液滴的接触角作为液体-蒸汽表面张力和分压的函数。这种效果将是有用的，作为一种手段，通过宏观测量探测润湿所涉及的微观界面力。
A 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.