Drops on an inclined heterogeneous substrate: onset of sliding motion

Details Drops on an inclined heterogeneous substrate: onset of sliding motion Drops on an inclined heterogeneous substrate: onset of sliding motion

2006-03-08

arxiv.org/abs/physics/0603057v1

Physics

Fluid Dynamics

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.97.204501

Pinning and depinning of drops on an inclined heterogeneous substrate is studied as a function of the inclination and heterogeneity amplitude. Two types of heterogeneity are considered: a hydrophobic defect that blocks the droplet in front, and a hydrophilic one that holds it at the back. Two different types of depinning leading to sliding motion are identified, and the resulting stick-slip motion is studied numerically.

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