ESPCI web site
PMMH’s weekly seminar is held every Friday at 11 am (map)
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France
Tel : (33) 1 40 79 45 22
Séminaire PMMH – Christina Kurzthaler (MPI Dresden)
Microbes in motion : from surface interactions to porous media
Swimming microorganisms represent fascinating exemplars of non-equilibrium systems and display a range of unusual physical phenomena. These active agents often operate in complex environments, characterized by confining boundaries and flows, that can strongly modify their swimming dynamics. In this talk, I will first discuss the hydrodynamic interactions of microswimmers with a nearby deformable boundary, like a biological membrane. Using a far-field description for the flows and a perturbation theory for small deformations, we find that elastohydrodynamic couplings can generate behaviors that are fundamentally different to swimming near rigid walls. In the second part, I will discuss the impact of flows on active transport through a disordered, porous channel. While in the absence of flow agents accumulate at boundaries, shear also generates extended trapping phases of microswimmers in areas of the flow backbone, leading to prominent power-law tails in the exit-time distributions. Both examples highlight intricate hydrodynamic couplings in active systems and their potential consequences for the accumulation of microbial communities and the onset of biofilm formation.
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Recent seminars (6)
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Séminaire PMMH – Marie Poulain-Zarcos (LFMA, Lyon)
Vendredi 17 octobre de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH – Florence Bertails-Descoubes (INRIA, Grenoble) & Sébastien Neukirch (∂Alembert)
Vendredi 10 octobre de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH – Antoine Sanner (ETH Zürich)
Vendredi 3 octobre de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH – Antoine Deblais (U. Amsterdam)
Vendredi 26 septembre de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH - Anaïs Gauthier, IPR Rennes, CNRS
Vendredi 19 septembre de 11h00 à 12h00 - Salle réunion PMMH 1
Capillary choreographies at low-Friction interfaces
From Leidenfrost baths to soap films The motion of millimetre-sized objects trapped at the liquid-air interfaces is a familiar phenomenon, seen in the clumping of cereals in a bowl or of bubbles at the surface of a sparkling drink. The deformation of the interface typically generates attractive forces between the (…) -
Séminaire PMMH – Morgan Chabanon
Du 2025 à 11h00 au 0001 à 00h00 - Salle réunion PMMH 1
The audience is composed of people with rather heterogeneous backgrounds including specialists in solids, fluids, granular flows, statistical physics... so the idea is to keep your talk understandable by people not necessarily working in your field... The seminar time slot runs from 11am to noon so the best is to make the talk last around 45 minutes to leave some time for discussion.
- Séminaires ESPCI-ENS de biophysique
- Séminaires du Département de Physique de l’ENS
- Séminaires du Laboratoire d’Hydrodynamique de l’X
- Séminaire de Mécanique d’Orsay (page web FAST)
- Séminaire de Mécanique d’Orsay (page web LIMSI)
- Séminaire de Mécanique des Fluides de l’Institut Jean le Rond d’Alembert
- Séminaires du laboratoire MSC, Paris VII
- Séminaires Gulliver
Link to cofee seminar (internal, every Thursday)
