Title: Contact Angle Hysteresis on Randomly Rough Surfaces: A Computational Study
Abstract:Wetting is important in many applications, and the solid surfaces being wet invariably feature some amount of surface roughness. A free energy-based computational simulation is used to study the effec...Wetting is important in many applications, and the solid surfaces being wet invariably feature some amount of surface roughness. A free energy-based computational simulation is used to study the effect of roughness on wetting and especially contact angle hysteresis. On randomly rough, self-affine surfaces, it is found that hysteresis depends primarily on the value of the Wenzel roughness parameter r, increasing in proportion with r - 1. Micrometer-level roughness causes hysteresis of a few degrees.Read More
Publication Year: 2013
Publication Date: 2013-03-18
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
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Cited By Count: 25
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