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Leidenfrost drops
J.-B.
Osio
When a liquid drop is deposited on a very hot surface, the liquid in
contact with the surface evaporates almost instantaneously, creating a vapour cushion over which the drop floats.
As it is well known, this phenomenon is named after Leidenfrost,
who observed it incidentally in 1756.
A similar phenomenon occurs when
the drop impacts on the surface with a certain initial velocity: the vapour film prevents wetting so that the drop can
easily bounce off the surface. We study the dynamics of bouncing Leidenfrost drops, for both Newtonian and viscoelastic liquids.
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