Wetting in 1+1 dimensions with two-scale roughness

被引：6
|
作者：
de Coninck, Joel [1 ]
Dunlop, Francois [2 ,3 ]
Huillet, Thierry [2 ,3 ]
机构：
[1] Univ Mons, Lab Phys Surfaces & Interfaces, B-7000 Mons, Belgium
[2] CNRS, UMR 8089, Lab Phys Theor & Modelisat, F-95032 Cergy Pontoise, France
[3] Univ Cergy Pontoise, F-95032 Cergy Pontoise, France
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2015年 / 438卷
关键词：
Wetting; Cassie-Baxter; Wenzel; Hydrophobicity; Roughness; SUPERHYDROPHOBIC SURFACES; SCALE ROUGHNESS; NANOSTRUCTURES; CASSIE; WENZEL;
D O I：
10.1016/j.physa.2015.06.030
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show that a two-scale model in 1 + 1 dimensions enhances superhydrophobicity. The two scales may differ by a factor of order two or three, or by a large factor in a scaling limit. In both cases, we compute explicitly the macroscopic contact angles as function of the flat material contact angle and aspect ratios. In addition to the Cassie Baxter states with air cushion below the droplet and to the Wenzel states, completely wet, there appear several mixed states with air trapped in corners. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：398 / 415
页数：18
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