Contact Angles of Liquid Drops Subjected to a Rough Boundary

  title={Contact Angles of Liquid Drops Subjected to a Rough Boundary},
  author={Gershon Wolansky},
  journal={SIAM J. Math. Anal.},
  • G. Wolansky
  • Published 2 August 2017
  • Physics
  • SIAM J. Math. Anal.
The contact angle of a liquid drop on a rigid surface is determined by the classical theory of Young-Laplace. For chemically homogeneous surfaces, this angle is a constant. We study the minimal-energy configurations of liquid drops on rough surfaces. Here the actual angle is still constant for homogeneous surfaces, but the apparent angle can fluctuate widely. A limit theorem is introduced for minimal energy configuration, where the rigid surface converges to a smooth one, but the roughness… 

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