Self-Propelled Leidenfrost Droplets

H. Linke, B. J. Alemán, L. D. Melling, M. J. Taormina, M. J. Francis, C. C. Dow-Hygelund, V. Narayanan, R. P. Taylor, and A. Stout
Phys. Rev. Lett. 96, 154502 – Published 19 April 2006
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Abstract

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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  • Received 16 November 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.154502

©2006 American Physical Society

Authors & Affiliations

H. Linke1,2,*, B. J. Alemán1, L. D. Melling1, M. J. Taormina1, M. J. Francis2, C. C. Dow-Hygelund1, V. Narayanan3, R. P. Taylor1, and A. Stout1

  • 1Materials Science Institute and Physics Department, University of Oregon, Eugene, Oregon 97405-1274, USA
  • 2School of Physics, University of New South Wales, Sydney 2052, Australia
  • 3Department of Mechanical Engineering, Oregon State University, Corvallis, Oregon 97331, USA

  • *Corresponding author. Electronic address: linke@uoregon.edu

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Issue

Vol. 96, Iss. 15 — 21 April 2006

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