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On the depinning of a drop of partially wetting liquid on a rotating cylinder

  • UWE THIELE (a1)


We discuss the analogy of the behaviour of films and drops of liquid on a rotating horizontal cylinder on the one hand and substrates with regular one-dimensional wettability patterns on the other hand. On the basis of the similarity between the respective governing long-wave equations, we show that a drop of partially wetting liquid on a rotating cylinder undergoes a depinning transition when the rotation speed is increased. The transition occurs via a sniper bifurcation, as in a recently described scenario for drops depinning on heterogeneous substrates.


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On the depinning of a drop of partially wetting liquid on a rotating cylinder

  • UWE THIELE (a1)


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