Droplets on inclined rough surfaces

被引:49
作者
Hyvaluoma, J.
Koponen, A.
Raiskinmaki, P.
Timonen, J.
机构
[1] Univ Jyvaskyla, Dept Phys, FI-40014 Jyvaskyla, Finland
[2] VTT Tech Res Ctr Finland, FI-40101 Jyvaskyla, Finland
关键词
D O I
10.1140/epje/i2007-10190-7
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 behaviour of liquid droplets on inclined heterogeneous surfaces was simulated by the lattice-Boltzmann method using the Shan-Chen multiphase model. The effect of topography of the surface on the contact angle hysteresis was investigated. It is shown in particular, by using anisotropic rough surfaces, how surface topography and thereby the continuity of the three-phase contact line, affect this hysteresis. Our results clearly indicate that the superhydrophobicity of a surface cannot be judged by the contact angle alone.
引用
收藏
页码:289 / 293
页数:5
相关论文
共 54 条
[1]   SURFACE ROUGHNESS AS RELATED TO HYSTERESIS OF CONTACT ANGLES .1. THE SYSTEM PARAFFIN WATER AIR [J].
BARTELL, FE ;
SHEPARD, JW .
JOURNAL OF PHYSICAL CHEMISTRY, 1953, 57 (02) :211-215
[2]   SURFACE ROUGHNESS AS RELATED TO HYSTERESIS OF CONTACT ANGLES .2. THE SYSTEMS PARAFFIN-3 MOLAR CALCIUM CHLORIDE SOLUTION-AIR AND PARAFFIN-GLYCEROL-AIR [J].
BARTELL, FE ;
SHEPARD, JW .
JOURNAL OF PHYSICAL CHEMISTRY, 1953, 57 (04) :455-458
[3]   Mesoscopic modeling of a two-phase flow in the presence of boundaries: The contact angle [J].
Benzi, R. ;
Biferale, L. ;
Sbragaglia, M. ;
Succi, S. ;
Toschi, F. .
PHYSICAL REVIEW E, 2006, 74 (02)
[4]   THE LATTICE BOLTZMANN-EQUATION - THEORY AND APPLICATIONS [J].
BENZI, R ;
SUCCI, S ;
VERGASSOLA, M .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1992, 222 (03) :145-197
[5]   Wettability of porous surfaces. [J].
Cassie, ABD ;
Baxter, S .
TRANSACTIONS OF THE FARADAY SOCIETY, 1944, 40 :0546-0550
[6]   CONTACT ANGLES [J].
CASSIE, ABD .
DISCUSSIONS OF THE FARADAY SOCIETY, 1948, 3 :11-16
[7]   Lattice Boltzmann method for fluid flows [J].
Chen, S ;
Doolen, GD .
ANNUAL REVIEW OF FLUID MECHANICS, 1998, 30 :329-364
[8]   Ultrahydrophobic and ultralyophobic surfaces:: Some comments and examples [J].
Chen, W ;
Fadeev, AY ;
Hsieh, MC ;
Öner, D ;
Youngblood, J ;
McCarthy, TJ .
LANGMUIR, 1999, 15 (10) :3395-3399
[9]   DYNAMICS OF WETTING WITH A DISORDERED SUBSTRATE - THE CONTACT-ANGLE HYSTERESIS [J].
COLLET, P ;
DECONINCK, J ;
DUNLOP, F .
EUROPHYSICS LETTERS, 1993, 22 (09) :645-650
[10]   WETTING - STATICS AND DYNAMICS [J].
DEGENNES, PG .
REVIEWS OF MODERN PHYSICS, 1985, 57 (03) :827-863