Dynamic contact angle of a droplet spreading on heterogeneous surfaces

被引：0
|
作者：
Leopoldes, J. [1 ]
机构：
[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
来源：
Contact Angle, Wettability and Adhesion, Vol 4 | 2006年
关键词：
wetting; microcontact printing; dynamic contact angle;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Spreading of viscous droplets on model surfaces obtained by microcontact printing is studied. Here, the special case where surface heterogeneities are in the form of micro-chemical stripes is considered. It is shown that an elongated flow occurs, which develops through the relaxation of the longitudinal curvature of the liquid-air interface. Finally, we find that the dynamic contact angle of a droplet spreading along the chemical stripes shows similar variation with spreading velocity as that for a droplet spreading on a homogeneous surface.
引用
收藏
页码：177 / 182
页数：6
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