The Geometry of the Vapor Layer Under a Leidenfrost Drop
arXiv:1202.2157 · doi:10.1103/PhysRevLett.109.074301
Abstract
In the Leidenfrost effect, liquid drops deposited on a hot surface levitate on a thin vapor cushion fed by evaporation of the liquid. This vapor layer forms a concave depression in the drop interface. Using laser-light interference coupled to high-speed imaging, we measured the radius, curvature, and height of the vapor pocket, as well as non-axisymmetric fluctuations of the interface for water drops at different temperatures. The geometry of the vapor pocket depends primarily on the drop size and not on the substrate temperature.
4 pages, 3 figures
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Cited by in corpus (27)
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