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SUMMARY:Hydrodynamic Theory of Coating - Jens Eggers\, Bristol
DTSTART:20150129T120000Z
DTEND:20150129T130000Z
UID:TALK57074@talks.cam.ac.uk
CONTACT:Catherine Pearson
DESCRIPTION:A prototypical problem in the study of coating\nis that of a s
 olid plunging into or being withdrawn\nfrom a liquid bath. If the fluid do
 es not wet the solid\,\nthe solid remains dry unless it is withdrawn at su
 fficiently\nhigh speed so that fluid is entrained by viscous drag.\nWe sho
 w that there exists a critical speed above which a three-phase\ncontact li
 ne is no longer sustainable\, and the solid is being coated\nwith a liquid
  film. We explain the nature of this transition by matching\nthe highly cu
 rved contact line region to the static profile\nfar away from it. The thic
 kness of the entrained film also\ndepends on the wetting properties of the
  fluid. All our theoretical\npredictions are compared in detail to experim
 ent. 
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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