Room temperature water Leidenfrost droplets
نویسندگان
چکیده
منابع مشابه
Room temperature water Leidenfrost droplets.
We experimentally investigate the Leidenfrost effect at pressures ranging from 1 to 0.05 atmospheric pressure. As a direct consequence of the Clausius–Clapeyron phase diagram of water, the droplet temperature can be at ambient temperature in a non-sophisticated lab environment. Furthermore, the lifetime of the Leidenfrost droplet is significantly increased in this low pressure environment. The ...
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Friction is a major inhibitor in almost every mechanical system. Enlightened by the Leidenfrost effect - a droplet can be levitated by its own vapor layer on a sufficiently hot surface - we demonstrate for the first time that a small cart can also be levitated by Leidenfrost vapor. The levitated cart can carry certain amount of load and move frictionlessly over the hot surface. The maximum load...
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We report that liquids perform self-propelled motion when they are placed in contact with hot surfaces with asymmetric (ratchetlike) topology. The pumping effect is observed when the liquid is in the Leidenfrost regime (the film-boiling regime), for many liquids and over a wide temperature range. We propose that liquid motion is driven by a viscous force exerted by vapor flow between the solid ...
متن کاملar X iv : 1 30 8 . 09 41 v 1 [ co nd - m at . s of t ] 5 A ug 2 01 3 Room temperature water Leidenfrost droplets
Franck Celestini , Thomas Frisch , Yves Pomeau 1 Laboratoire de Physique de la Matière Condensée, CNRS UMR 7366, Université de Nice Sophia-Antipolis, Parc Valrose 06108 Nice Cedex 2, France 2 Institut Non Linéaire de Nice, CNRS UMR 7735, Université de Nice Sophia-Antipolis, 1361 Routes des lucioles, Sophia Antipolis F-06560 Valbonne France and 3 University of Arizona, Department of Mathematics,...
متن کاملTake off of small Leidenfrost droplets.
We put in evidence the unexpected behavior of Leidenfrost droplets at the later stage of their evaporation. We predict and observe that, below a critical size Rl, the droplets spontaneously take off due to the breakdown of the lubrication regime. We establish the theoretical relation between the droplet radius and its elevation. We predict that the vapor layer thickness increases when the dropl...
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ژورنال
عنوان ژورنال: Soft Matter
سال: 2013
ISSN: 1744-683X,1744-6848
DOI: 10.1039/c3sm51608c