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SUMMARY:Capillary interaction between anisotropic colloids at fluid-fluid 
 interfaces - Lorenzo Botto (Imperial)
DTSTART:20130215T160000Z
DTEND:20130215T170000Z
UID:TALK42524@talks.cam.ac.uk
CONTACT:Dr Ed Brambley
DESCRIPTION:A colloidal particle of intermediate wettability coming into c
 ontact with the interface between two immiscible fluids can remain irrever
 sibly trapped in it. This phenomenon\, which is due to capillary forces\, 
 is exploited in a variety of applications\, from solid-stabilized emulsion
 s to the production of advanced functional materials. While smooth and che
 mically homogeneous spherical particles do not distort the interface to wh
 ich they adsorb\, anisotropic particles (cylinders\, ellipsoids\, etc.) do
  induce interfacial distortions. This distortion results in lateral capill
 ary interactions that act at distances much larger than the characteristic
  particle size.  In this talk\, I will present results for a combined expe
 rimental\, numerical and theoretical effort to predict the far- and near-f
 ield capillary interaction between anisotropic interfacial colloids. The s
 tudy of this system poses interesting mathematical problems\, and suggests
  research areas to which fluid mechanicians can make important contributio
 ns.\n
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
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