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RESEARCH PAPERS

Macroscopic Wetting Behavior of a Two-Dimensional Meniscus Under a Horizontal Plate

[+] Author and Article Information
Kenji Katoh

Department of Mechanical Engineering, Osaka City University, Sugimoto, Sumiyoshiku, Osaka 558, Japan

Hideomi Fujita

Department of Mechanical Engineering, Nagoya University, Furocho, Chikusaku, Nagoya 464-01, Japan

Hideharu Sasaki

Ishikawajima System Technology Co., Ltd., Kudanminami 4-6-15, Chiyodaku, Tokyo 102, Japan

J. Fluids Eng 117(2), 303-308 (Jun 01, 1995) (6 pages) doi:10.1115/1.2817145 History: Received November 30, 1993; Revised September 07, 1994; Online December 04, 2007

Abstract

The purpose of this study is to investigate macroscopic wetting behavior and to verify the validity of the assumption made in the analysis of the preceding report that the complicated effects of the microscopic structures of the solid surface such as roughness or heterogeneity on the macroscopic wetting behavior are simply represented by the values of the apparent contact angles. The unstable phenomenon of a two-dimensional meniscus under a horizontal plate, in which the meniscus falls spontaneously at a certain height of the plate, is considered theoretically from a thermodynamic viewpoint. The results of the analysis based on the above assumption agree with those by an analysis in which the effect of microscopic structures of the solid surface, such as roughness and heterogeneity, are taken into consideration. Therefore, the validity of the assumption made in the preceding report is verified.

Copyright © 1995 by The American Society of Mechanical Engineers
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