Self-propelled film-boiling liquids

Details Self-propelled film-boiling liquids Self-propelled film-boiling liquids

2005-12-27

arxiv.org/abs/physics/0512246v1

Physics

Fluid Dynamics

Scientific paper

We report that liquids perform self-propelled motion when they are placed in contact with hot surfaces with asymmetric (ratchet-like) topology. The pumping effect is observed when the liquid is in 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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