EXPERIMENTAL-OBSERVATION OF HYSTERESIS IN A WETTING TRANSITION

被引:89
作者
BONN, D [1 ]
KELLAY, H [1 ]
WEGDAM, GH [1 ]
机构
[1] ECOLE NORM SUPER,PHYS STAT LAB,F-75231 PARIS 05,FRANCE
关键词
D O I
10.1103/PhysRevLett.69.1975
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
An ellipsometric study of the cyclohexane-methanol mixture shows that in the wetting regime, either a very thin or a thick film is formed at the liquid/vapor interface. The observed hysteresis is consistent with the assumption that the wetting transition is first order. The thick layer can be accounted for by the stabilization of the wetting layer by long-range van der Waals forces. In agreement with this, the equilibrium wetting layer thickness shows no dependence on the temperature. The thin film is shown to be governed by short-range forces.
引用
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页码:1975 / 1978
页数:4
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