Origin of line tension for a Lennard-Jones nanodroplet

  • Weijs J
  • Marchand A
  • Andreotti B
 et al. 
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Abstract

The existence and origin of line tension has remained controversial in literature. To address this issue we compute the shape of Lennard-Jones nanodrops using molecular dynamics and compare them to density functional theory in the approximation of the sharp kink interface. We show that the deviation from Young's law is very small and would correspond to a typical line tension length scale (defined as line tension divided by surface tension) similar to the molecular size and decreasing with Young's angle. We propose an alternative interpretation based on the geometry of the interface at the molecular scale.

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Authors

  • Joost H. Weijs

  • Antonin Marchand

  • Bruno Andreotti

  • Detlef Lohse

  • Jacco H. Snoeijer

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