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Author (up) Hemmerle, A.; Froehlicher, G.; Bergeron, V.; Charitat, T.; Farago, J. doi  openurl
  Title Worm-like instability of a vibrated sessile drop Type Journal Article
  Year 2015 Publication Epl Abbreviated Journal  
  Volume 111 Issue 2 Pages  
  Keywords  
  Abstract We study the effects of vertical sinusoidal vibrations on a liquid droplet with a low surface tension (ethanol) deposited on a solid substrate. In a precise range of amplitudes and frequencies, the drop exhibits a dramatic worm-like shape instability with a strong symmetry breaking, comparable to the one observed by Pucci et al. (Phys. Rev. Lett., 106 (2011) 024503) on a vibrated floating lens. However, the geometry of our system is much simpler since it does not involve the oscillation and deformation of a liquid-liquid-air contact line. We show that the Faraday waves appearing on the surface of the droplet control its shape and we draw a systematic phase diagram of the instability. A simple theoretical model allows us to derive a relation between the elongation of the droplet and the amplitude of the Faraday wave, in good agreement with measurements of both quantities. Copyright (C) EPLA, 2015  
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  Series Volume Series Issue Edition  
  ISSN 0295-5075 ISBN Medium mcube  
  Area Expedition Conference  
  Notes Times Cited: 1011286-4854 Approved no  
  Call Number Admin @ benzerara @ Hemmerle2015 Serial 13859  
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