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SUMMARY:Directed Assembly of Active Colloidal Devices - Professor Mike Cat
 es (DAMTP)
DTSTART:20160218T120000Z
DTEND:20160218T130000Z
UID:TALK63337@talks.cam.ac.uk
CONTACT:Salvatore Tesoro
DESCRIPTION:Self-propelled "active" colloids offer a well-controlled analo
 gue of motile micro-organisms. Their micro-dynamics violates time reversal
  symmetry allowing "ratchet" effects (steady-state fluxes) in spatially as
 ymmetric microfluidic environments\, and phase separation in the absence o
 f attractive forces. The speed of propulsion can in some cases be controll
 ed by light fields. This suggests a way of using light to guide colloids t
 o build their own microfluidic devices out of a primordial soup of particl
 es. I will show simulation results that offer partial proof-of-concept for
  this idea. Then I will discuss some of the deeper theory issues that aris
 e when doing statistical mechanics without time reversal symmetry.\n
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Cavendish Laboratory
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