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  • Journal of Fluid Mechanics, Volume 510
  • July 2004, pp. 29-45

Drops on a conical wire

  • DOI:
  • Published online: 01 June 2004

We study experimentally the behaviour of a drop deposited on a conical fibre. It is shown that for wetting liquids, such a drop spontaneously moves towards the region of lower curvature. The driving force is measured and shown to be a gradient of Laplace pressure, which allows us to characterize the dynamics of these self-propelling drops. We conclude by discussing the efficiency of this device for drying a solid initially coated with a liquid film.

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Journal of Fluid Mechanics
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  • EISSN: 1469-7645
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