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TZID:Europe/Paris
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BEGIN:VEVENT
UID:1-499@lptms.universite-paris-saclay.fr
DTSTART:20170328T110000Z
DTEND:20170328T120000Z
DTSTAMP:20170308T202234Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-jean-baptiste-delfau/
SUMMARY:Séminaire du LPTMS: Jean-Baptiste Delfau - LPTMS\, salle 201\, 2è
 me étage\, Bât 100\, Campus d'Orsay - 28 Mar 17 11:00
DESCRIPTION:A counter-intuitive case of spontaneous aggregation : crystals 
 of clusters\nJean-Baptiste Delfau (Universitat de les Illes Balears\, Palm
 a de Mallorca\, Spain)\n\n\nParticles interacting via purely repulsive sof
 t-core potentials can spontaneously aggregate\, despite repelling each oth
 er\, and form periodic crystals of particle clusters. We studied this phen
 omenon - relevant to colloidal or polymer solutions - for passive (Brownia
 n) and active (self-propelling) particles at two levels of description: pe
 rforming numerical simulations of the discrete particle dynamics\, and by 
 linear and nonlinear analysis of the corresponding Dean-Kawasaki equations
  for the macroscopic particle density. In this seminar\, I will explain wh
 at are the mechanisms of the instability leading to clustering which turn 
 out to be the interplay between diffusion or self-propulsion\, the intracl
 uster forces and the forces between neighboring clusters.\n\n\nReferences 
 :\n\n	J.-B. Delfau\, H. Ollivier\, C. López\, B. Blasius &amp\; E. Herná
 ndez-García\, Pattern formation with repulsive soft-core interactions: Di
 screte particle dynamics and Dean-Kawasaki equation\, Phys. Rev. E 94\, 04
 2120 (2016)\n	J.-B. Delfau\, C. López\, E. Hernández-García\, Active cl
 uster crystals\, arXiv:1701.02639 \n\n\n
CATEGORIES:seminars
LOCATION:LPTMS\, salle 201\, 2ème étage\, Bât 100\, Campus d'Orsay\, 15 
 Rue Georges Clemenceau\, Orsay\, 91405\, France
GEO:48.698185;2.181768
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=15 Rue Georges Clemenceau\,
  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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