The effect of surface anisotropy on contact angles and the characterization of elliptical cap droplets

被引：0

作者：

WANG ZhanLong ^{[1
,2
]}

CHEN EnHui ^{[1
,2
]}

ZHAO YaPu ^{[1
,2
]}

机构：

[1] State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences

[2] School of Engineering Science, University of Chinese Academy of Sciences

来源：

Science China(Technological Sciences) | 2018年 / 61卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O647 [表面现象的物理化学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, the variation of contact angles of a droplet on grooved surfaces was studied from microscale to macroscale experimentally and theoretically. The experimental results indicated that the contact angle changes nonlinearly with anisotropic factor. To get clear of the changing process of contact angle on grooved surfaces from microscale to macroscale, we carried out theoretical analysis with moment equilibrium method being adopted. In addition, the variation of contact angles in different directions was investigated and a mathematic model to calculate arbitrary contact angles around the elliptic contact line was suggested. For the convenience of potential applications, a symbolic contact angle was proposed to characterize the ellipsoidal cap droplet on grooved surfaces. Our results will offer help to the future design of patterned surfaces in practical applications,and deepen the understanding of wetting behavior on grooved surfaces.

引用

页码：309 / 316

页数：8

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