Self-crumpling elastomers: Bending induced by the drying stimulus of a nanoparticle suspension

F. Boulogne, Howard A. Stone

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We report an experimental study of the drying-induced peeling of a bilayer, consisting of an elastomeric disk coated with a suspension of nanoparticles. We show that although capillary forces associated with the scale of the droplet cannot compete with the adhesion of the elastomer on a surface, large tensile stresses develop in the coating, which results in a moment bending the bilayer. We attribute this stress to the nano-menisci in the pores of the colloidal material and we propose a model that describes successfully the early-stage curvature of the bilayer. Thus, we show that the peeling can be conveniently controlled by the particle size and the coating thickness.

Original languageEnglish (US)
Article number19001
JournalEPL
Volume108
Issue number1
DOIs
StatePublished - Oct 1 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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