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SUMMARY:Deterministic lateral displacement for selective particle trapping
  - Alex Chamolly (University of Cambridge)
DTSTART:20190124T130000Z
DTEND:20190124T140000Z
UID:TALK117337@talks.cam.ac.uk
CONTACT:Anne Herrmann
DESCRIPTION:Deterministic lateral displacement (DLD) is a technique widely
  used in microfluidics for size-based separation. DLD devices typically co
 nsists of an array of static micro-posts that deflect the motion of oncomi
 ng particles using steric repulsion. In this project\, we expand the conce
 pt of DLD by showing that a system with a rotational and translational mot
 ion near a solid boundary can trap and transport passive particles. Trappi
 ng is achieved because free-flowing finite-size particles cannot follow fl
 ow streamlines as a result of their collision with a solid boundary\, and 
 thus have move laterally to into a flow vortex in which they are trapped. 
 The trapping mechanism is explained analytically in two dimensions and inv
 estigated numerically for rolling ellipsoids in three dimensions.
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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