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SUMMARY:Geometric tuning of the self-propulsion of catalytic particles - S
 ebastien Michelin (Ecole Polytechnique)
DTSTART:20170329T120000Z
DTEND:20170329T130000Z
UID:TALK71857@talks.cam.ac.uk
CONTACT:Julius Bier Kirkegaard
DESCRIPTION:Catalytic swimmers self-propel by generating slip flows along 
 their surface in response to physicochemical gradients in their environmen
 t resulting from their own chemical activity. Chemical patterning of these
  particles is the most classical route to break symmetry and achieve self-
 propulsion (e.g. Janus particles). Yet\, experiments show that chemically-
 identical particles may propel in opposite directions\, emphasising that c
 hemistry alone may not be sufficient to fully determine their propulsion c
 haracteristics. In this presentation\, we will show how the detailed parti
 cle geometry may profoundly influence their swimming direction and velocit
 y\, as well as the hydrodynamic interactions between particles. Other symm
 etry-breaking routes will also be presented.\n
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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