Self-propelled Leidenfrost droplets.
نویسندگان
چکیده
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 and the liquid.
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ورودعنوان ژورنال:
- Physical review letters
دوره 96 15 شماره
صفحات -
تاریخ انتشار 2006