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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-162@lptms.universite-paris-saclay.fr
DTSTART:20130723T110000Z
DTEND:20130723T120000Z
DTSTAMP:20130723T101835Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-giulia-foffano/
SUMMARY:Séminaire du LPTMS: Giulia Foffano  - LPTMS\, salle 201\, 2ème é
 tage\, Bât 100\, Campus d'Orsay - 23 Juil 13 11:00
DESCRIPTION:Stokes' law violation and negative drag in active fluids\nGiuli
 a Foffano\, University of Edinburgh\nActive fluids are suspensions of part
 icles that absorb energy from their surroundings or from an internal tank\
 , in order to do work. Main examples can be found in biological contexts a
 nd are e.g. bacteria suspensions and the actomyosin solution\, that consti
 tutes the cytoskeleton. I will present simulations where a small constant 
 force is applied to a spherical colloid embedded in an active liquid cryst
 al. In the linear regime the dissipative force acting on the particle embe
 dded in a simple fluid is described by Stokes' law. Here instead we find a
  strong non-linearity with respect to the size of the probe and\, striking
 ly\, a regime where the colloid reaches a steady state of negative drag.
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
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  Orsay\, 91405\, France;X-APPLE-RADIUS=100;X-TITLE=LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay:geo:48.698185,2.181768
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