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SUMMARY:Modelling drops on micropatterned surfaces - Julia M. Yeomans (Uni
 versity of Oxford)
DTSTART:20110225T160000Z
DTEND:20110225T170000Z
UID:TALK28854@talks.cam.ac.uk
CONTACT:Doris Allen
DESCRIPTION:We discuss the use of free energy lattice Boltzmann algorithms
  as tools to investigate multiphase flow at surfaces with chemical and top
 ographic patterning. Putting together arguments based on the\nGibbs criter
 ion for interface pinning and the numerical approaches\, we show how capil
 lary filling and imbibition can be controlled by surface patterning. We th
 en consider the link between patterned surfaces and superhydrophobic behav
 iour and discuss the extent to which the dynamics of drops rolling across 
 superhydrophobic surfaces is understood. We identify a novel\, partially s
 uspended\, superhydrophobic state and suggest an interpretation of the\nan
 isotropic motion of water drops on butterfly wings.\n
LOCATION:MR2\, Centre for Mathematical Sciences\, Wilberforce Road\, Cambr
 idge
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