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SUMMARY:Activity induced phase separation - Prof Jean-Francois Joanny (Ins
 titut Curie)
DTSTART:20160506T110000Z
DTEND:20160506T120000Z
UID:TALK65952@talks.cam.ac.uk
CONTACT:Salvatore Tesoro
DESCRIPTION:We consider a new type of active systems made of two types of 
 colloidal particles each in contact with a thermostat but at different tem
 peratures. We analyze the stability conditions of either uniformly mixed o
 r phase segregated steady states consisting of phases enriched with each t
 ype of particles.\n\nWe show that in sufficiently dilute mixtures\, the sy
 stem can be described by a non-equilibrium equivalent of  the second viria
 l approximation by neglecting three body and higher order collisions. In t
 his approximation\, we define non-equilibrium "chemical potentials"\nwhose
  gradients govern diffusion fluxes and a non-equilibrium "osmotic pressure
 "\, which governs the mechanical stability of the interface.\n\nThis model
  could be used to describe mixtures of bacteria and passive colloidal part
 icles but it could also be related to the compartmentalization of the cell
  nucleus.
LOCATION:TCM Seminar room\, 530 Mott building
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