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UID:0-651@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20190312T110000
DTEND;TZID=Europe/Paris:20190312T120000
DTSTAMP:20190227T185200Z
URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm
 s-serge-dmitrieff/
SUMMARY:séminaire du LPTMS: Serge Dmitrieff - LPTMS\, salle 201\, 2ème é
 tage\, Bât 100\, Campus d'Orsay - 12 Mar 19 11:00
DESCRIPTION:Simple elasticity problems inspired by biology\nSerge Dmitrieff
  (Institut Jacques Monod)\nBiological cells are physical elements under in
 ternal and external mechanical constraints. For instance\, cell need to op
 pose exterior stress to maintain their shapes\, and overcome large interna
 l drag forces to transport cargo. I will discuss about the role of semi-fl
 exible polymers called microtubules in these processes.\n\nWe will see tha
 t we can use simple physical notions from elasticity to address these prob
 lems : the maintenance the shape of blood cells can be understood as the b
 uckling of a visco-elastic bundle in confinement\, while some examples of 
 intracellular transport to the cell center appears akin to Newton's first 
 theorem\, albeit with elastic forces. Even minimal formulations of these p
 roblems are deceivingly simple\, and yield interesting new physics\, such 
 as the metastability of disc-like cells\, and unexpected scaling laws for 
 centering forces.
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
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