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 language | English (US) |
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Article number | 19001 |
Journal | EPL |
Volume | 108 |
Issue number | 1 |
DOIs | |
State | Published - Oct 1 2014 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)