Effect of transient pinning on stability of drops sitting on an inclined plane

Details Effect of transient pinning on stability of drops sitting on an inclined plane Effect of transient pinning on stability of drops sitting on an inclined plane

2006-09-23

arxiv.org/abs/physics/0609208v1

Physics

Fluid Dynamics

Scientific paper

10.1103/PhysRevE.75.066308

We report on new instabilities of the quasi-static equilibrium of water drops pinned by a hydrophobic inclined substrate. The contact line of a statically pinned drop exhibits three transitions of partial depinning: depinning of the advancing and receding parts of the contact line and depinning of the entire contact line leading to the drop's translational motion. We find a region of parameters where the classical Macdougall-Ockrent-Frenkel approach fails to estimate the critical volume of the statically pinned inclined drop.

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