Effect of contact angle hysteresis on the measurement of capillary forces

被引：102

作者：

De Souza, E. J. ^{[2
]}

Gao, L. C. ^{[1
]}

McCarthy, T. J. ^{[1
]}

Arzt, E. ^{[2
,3
]}

Crosby, A. J. ^{[1
]}

机构：

[1] Univ Massachusetts, Amherst, MA 01003 USA

[2] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

[3] INM Leibniz Inst New Mat, Saarbrucken, Germany

来源：

LANGMUIR | 2008年 / 24卷 / 04期

关键词：

D O I：

10.1021/la702188t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We conduct experimental investigations of macroscopic capillary forces between two flat rigid substrates characterized by their advancing and receding contact angles with water. Our results exhibit excellent agreement with theoretical predictions obtained by the numerical solution of the capillary equation. On the basis of this comparison, we use the measurements of the capillary force to investigate the phenomenon of contact angle hysteresis. We present examples of force measurements for surfaces that display low, moderate, and high contact angle hysteresis and compare results for a larger variety of substrates. Finally, we show that for the case of water, the role of viscosity is insignificant within the range of force and velocity measured in the present work.

引用

页码：1391 / 1396

页数：6

共 57 条

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