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SUMMARY:Hydrodynamic assembly of out of equilibrium colloids - Juho Lintuv
 uori (Université de Bordeaux)
DTSTART:20190206T164000Z
DTEND:20190206T172000Z
UID:TALK119809@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:In this talk\, I will describe our recent and ongoing simulati
 on efforts of hydrodynamic stabilisation of coherent structures formed by 
 out of equilibrium spherical (colloidal) particles suspended in a fluid. I
  will provide examples of both internally and externally driven systems. I
 n the first case we will consider active (self-propelling)particles\, whil
 e in the second case a system of driven colloidal spinners is created by e
 nergising passive particles by an external rotational drive. In both of th
 ese systems\, there exists an unexpected coupling between translational an
 d rotational motion: Spherical active particles\, modelled as squirmers\, 
 can form small hydrodynamically bound chiral spinners consisting of two or
  three particles\, when exposed to gravity-like aligning field near a surf
 ace. Passive but rotationally driven particles show a spontaneous formatio
 n of a large scale vortex at low but finite Reynolds numbers. Finally\, I 
 will discuss mixtures of the driven spinners\, where the other component c
 an be either passive particles or particles with an opposite spin giving a
  rise to a racemic mixture.<br>
LOCATION:Seminar Room 2\, Newton Institute
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