ESPCI web site
Séminaire Café (Interne)
Il s’agit d’un exposé assez court (20 min) et assez informel.
Prière aux conférencier·ère·s de ne jamais dépasser 30 min et de vérifier la compatibilité avec le projecteur avant le séminaire.
Les séminaires ont lieu les jeudis après la réunion du laboratoire qui débute à 13h30 dans la bibliothèque du labo sur le campus Jussieu, Barre Cassan, Bât A, 1er étage.
Pour suggérer un titre et envoyer un abstract, contacter 
et 
.
Coffee seminars are supposed to be short and informal presentations (20 min).
Please never last longer than 30 min and check the compatibility of the projector with your computer before the seminar.
Location : Campus Jussieu, Barre Cassan, Bât A, 1er étage
7 quai Saint Bernard
75005 Paris
To suggest a title or send an abstract, please contact and .
| 4 septembre | Ernesto Altshuler - Universidad de La Habana Imperfect granular penetrations |
| 11 septembre | Roberto Cerbino - University of Vienna Hydrodynamic fluctuations in sedimenting colloids : following in Perrin’s footsteps to the International Space Station We report a modern, space-resolved version of Perrin’s colloidal sedimentation experiment. Using differential dynamic microscopy, we map how equilibrium concentration fluctuations relax across depth and wave vectors q in suspensions that are stratified under gravity. While at large q, the relaxation rate Γ=Dq^2 is unsurprisingly related to the particle’s Brownian motion with diffusion coefficient D, we find an anomalous proportionality to 1/q^(2) for the relaxation at low q. In sufficiently thin cells, geometric confinement yields a re-entrant diffusive regime at an even smaller q with a distinct, enhanced effective diffusivity. We rationalize this three-regime behavior by the coupling between hydrodynamic velocity fluctuations and the sedimentation concentration gradient, and we outline future follow-up experiments under controlled effective gravity using a centrifuge-equipped microscope on the International Space Station. |
| 18 septembre | Samantha Kucher - MSC TBA |
| 25 septembre | PhD defense : Changsong Wu |
| 2 octobre | Sandeep Saha - IIT Kharagpur The intriguing annual migration of the dragonfly Pantala flavescens |
