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SUMMARY:Self-propulsion of catalytic conical micro-swimmer - Giacomo Galli
 no (University of Cambridge)
DTSTART:20171019T120000Z
DTEND:20171019T130000Z
UID:TALK94033@talks.cam.ac.uk
CONTACT:Julius Bier Kirkegaard
DESCRIPTION:Self-propelled artificial micro-motors have attracted much att
 ention both as fundamental examples of active matter and for their potenti
 al biomedical applications (e.g. drug delivery\, cell sorting). A popular 
 design exploits the catalytic decomposition of a fuel (e.g. hydrogen perox
 ide) on the active surface of the motor to produce oxygen bubbles that pro
 pel the swimmer\, effectively converting chemical energy into swimming mot
 ion. We focus here on a conical shape swimmer with chemically-active inner
  surfaces. Using numerical simulations of the chemical problem and viscous
  hydrodynamics\, we analyse the formation\, growth and motion of the bubbl
 es inside the micro-motor and the resulting swimming motion. Our results s
 hed light on the fundamental hydrodynamics of the propulsion of conical sw
 immers and may help to improve the efficiency of these machines.
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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