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

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

2012-01-09

arxiv.org/abs/1201.1719v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 6 figures. Submitted

Scientific paper

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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