Effect of an electric field on a Leidenfrost droplet

Details Effect of an electric field on a Leidenfrost droplet Effect of an electric field on a Leidenfrost droplet

2012-03-21

arxiv.org/abs/1203.4799v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 6 figures, 2 movies

Scientific paper

We experimentally investigate the effect of an electric field applied between a Leidenfrost droplet and the heated substrate on which it is levitating. We quantify the electro-Leidenfrost effect by imaging the interference fringes between the liquid-vapour and vapour-substrate interfaces. The increase of the voltage induces a decrease of the vapour layer thickness. Above a certain critical voltage the Leidenfrost effect is suppressed and the drop starts boiling. Our study characterizes this way to control and/or to avoid the Leidenfrost effect that is undesirable in many domains such as metallurgy or nuclear reactor safety.

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