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Motion of a drop driven by substrate vibrations

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2009
auteur(s) Brunet Philippe; Eggers Jens; Deegan R.D.
journal (abréviation) The European Physical Journal Special Topics (Eur Phys J Spec Top)
volume (numéro) 166
  
pages 11 – 14
résumé We report an experimental study of liquid drops moving against gravity, when placed on a vertically vibrating inclined plate, which is partially wet by the drop. Frequency of vibrations ranges from 30 to 200 Hz, and above a threshold in vibration acceleration, drops experience an upward motion. We attribute this surprising motion to the deformations of the drop, as a consequence of an up/down symmetry-breaking induced by the presence of the substrate. We relate the direction of motion to contact angle measurements.
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