Chin. Phys. Lett.  2010, Vol. 27 Issue (7): 076802    DOI: 10.1088/0256-307X/27/7/076802
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
A Model for the Contact Angle of Liquid Droplets on Rough Surfaces

MEI Mao-Fei, YU Bo-Ming, LUO Liang, CAI Jian-Chao

School of Physics, Huazhong University of Science and Technology, Wuhan 430074
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MEI Mao-Fei, YU Bo-Ming, LUO Liang et al  2010 Chin. Phys. Lett. 27 076802
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Abstract

Up to now, measured results of the contact angle on rough surfaces have been explained usually based on the Wenzel equation (1936) and the Cassie-Baxter equation (1944). However, these equations do not take into account considerations of liquid wetting behaviors on rough surfaces, and this leads to poor understanding of the mechanisms of contact between liquid droplets and rough surfaces (e.g. contact angle hysteresis). We propose a new model for the contact angle of liquid droplets. By means of the present model, we can well understand the experimental data which could not be well explained by the Wenzel equation and the Cassie-Baxter equation.

Keywords: 68.03.-g      68.08.-p      68.35.Ct     
Received: 13 January 2010      Published: 28 June 2010
PACS:  68.03.-g (Gas-liquid and vacuum-liquid interfaces)  
  68.08.-p (Liquid-solid interfaces)  
  68.35.Ct (Interface structure and roughness)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/7/076802       OR      https://cpl.iphy.ac.cn/Y2010/V27/I7/076802
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Articles by authors
MEI Mao-Fei
YU Bo-Ming
LUO Liang
CAI Jian-Chao
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