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arXiv · 1201.1719

Transition from Cassie to Wenzel state in patterned soft elastomer sliding contacts

Élise Degrandi-Contraires·Christophe Poulard·Frédéric Restagno·Raphaël Weil·Liliane Léger
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Abstract

In this paper, we presented an experimental and theoretical analysis of the formation of the contact between a smooth elastomer lens and an elastomer substrate micropatterned with hexagonal arrays of cylindrical pillars. We show using a JKR model coupled with a full description of the deformation of the substrate between the pillars that the transition between the top to the full contact is obtain when the normal load is increased above a well predicted threshold. We have also shown that above the onset of full contact, the evolution of the area of full contact was obeying a simple scaling.

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Élise Degrandi-Contraires, Christophe Poulard, Frédéric Restagno, Raphaël Weil, Liliane Léger. 2012-01-09. Transition from Cassie to Wenzel state in patterned soft elastomer sliding contacts. https://doi.org/10.1209/0295-5075%2F101%2F14001

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