Magnetic wetting transition

  • J. C. Bacri
  • R. Perzynski
  • D. Salin
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 354)


We follow the spreading of a magnetic liquid, a non wetting ferrofluid, along a wire. The external control parameter of the spreading length of the fluid is the magnetic field generated by a current travelling through the conducting wire. The spreading length results from a balance between capillary and magnetic forces. For a current threshold, we observe a rapid jump of this length corresponding to a sheath-like coverage of the wire. This magnetic wetting transition is analogous to the wetting transition on a fiber, predicted for a totally wetting fluid in the presence of van der Waals forces. The longer range of magnetic forces leads to a transition at a macroscopic scale. The crossover between micro and macro scales is studied. 1 associated with the Centre National de la Recherche Scientifique


Contact Angle Magnetic Force Magnetic Fluid Spreading Length Spreading Parameter 
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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • J. C. Bacri
    • 1
  • R. Perzynski
    • 1
  • D. Salin
    • 1
  1. 1.Laboratoire d'UltrasonsUniversité Pierre et Marie CurieParis Cedex 05France

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