Sliding friction at soft micropatterned elastomer interfaces

Elise Degrandi-Contraires; Christophe Poulard; Frédéric Restagno; Liliane Léger

doi:10.1039/C2FD00121G

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Faraday Discussions

Issue 1, 2012

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Sliding friction at soft micropatterned elastomer interfaces

Elise Degrandi-Contraires,^a^b Christophe Poulard,^a Frédéric Restagno^a and Liliane Léger*^a

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Laboratoire de Physique des Solides, Université Paris-Sud & CNRS, Bât. 510 – Campus universitaire d'Orsay, Orsay cedex, France
E-mail: liliane.leger@u-psud.fr

SVI, CNRS-Saint-Gobain Recherche, BP 135, Aubervilliers Cedex, France

Faraday Discuss., 2012,156, 255-265

DOI: 10.1039/C2FD00121G
Received 25 Nov 2011, Accepted 19 Jan 2012
First published online 19 Jan 2012

This article is part of themed collection: Tribology

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Abstract
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In this paper, we present an experimental study of the friction between a smooth elastomer lens and an elastomer substrate micropatterned with hexagonal arrays of cylindrical pillars. Depending on the normal load, the surfaces can be in top or mixed contact. The friction force can be interpreted in terms of friction stresses in the full contact and top contact zones. The latter is higher than that on smooth surfaces evidencing the role of the elastic deformations of the surfaces in the dissipation processes.

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