A new model for the formation of contact angle and contact angle hysteresis  

作　　者：公茂刚 刘远越 许小亮 

机构地区：[1]Department of Physics, University of Science and Technology of China

出　　处：《Chinese Physics B》2010年第10期390-395,共6页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China (Grant No. 2006CB302900);the National Natural Science Foundation of China (Grant No. 50872129)

摘　　要：The formation mechanism of the contact angle and the sliding angle for a liquid drop on a solid surface plays an important role in producing hydrophobic surfaces. A new half soakage model is established in this paper as a substitute for Wenzel （complete soakage） and Cassie （no soakage） models. The model is suited to many solid surfaces, whether they are hydrophilic or hydrophobic, or even superhydrophobic. Based on the half soakage model, we analyse two surfaces resembling lotus, i.e. taper-like surface and corona-like surface. Furthermore, this new model is used to establish a quantitative relationship between the sliding angle and the parameters of surface morphology.The formation mechanism of the contact angle and the sliding angle for a liquid drop on a solid surface plays an important role in producing hydrophobic surfaces. A new half soakage model is established in this paper as a substitute for Wenzel （complete soakage） and Cassie （no soakage） models. The model is suited to many solid surfaces, whether they are hydrophilic or hydrophobic, or even superhydrophobic. Based on the half soakage model, we analyse two surfaces resembling lotus, i.e. taper-like surface and corona-like surface. Furthermore, this new model is used to establish a quantitative relationship between the sliding angle and the parameters of surface morphology.

关 键 词：contact angle half soakage model contact angle hysteresis 

分 类 号：O485[理学—固体物理]