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 – Charlotte de Blois (FAST, U. Paris-Saclay)
From Individual Polymers to Collective Behavior : Exploring Polymer Interactions
Polymers in solution exhibit complex behavior that arises from the interplay between their molecular conformation, their interactions with other polymers, and the surrounding flow. In this talk, I will present how two of my postdoctoral projects—focusing respectively on individual polymer dynamics and the rheology of polymer solutions—have led me to explore polymer interactions at the nanoscopic scale.
I will first show how nanopore techniques, combined with an optical detection method, enable the characterization of polymer translocation at the molecular scale. I will then report observations of spontaneous low-velocity waves in viscoelastic flows over microstructured surfaces, highlighting their connection to elastic turbulence.
These two studies raise fundamental questions about the link between individual polymer dynamics and macroscopic flow properties. I will conclude with a discussion on how polymer translocation through nanopores could serve as a tool to probe polymer elongation in flow and its impact on fluid rheology.
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Recent seminars (7)
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Séminaire PMMH – Olga Dudko (University of California at San Diego)
Vendredi 18 avril de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH - Máté Nagy (Eötvös Loránd University, Budapest)
Vendredi 11 avril de 11h00 à 12h00 - Salle réunion PMMH 1
Physics of animal collective behavior : interactions with one another and their environment
The breathtaking aerial displays and mesmerizing formations of birds, fish shoals and the thunderous gallop of hundreds of horses exemplify captivating group behaviors in nature. Traditional measurement methods fall short in capturing these intricate behaviors arising from simple individual interactions, (…) -
Séminaire PMMH - Máté Nagy (Eötvös Loránd University, Budapest)
Vendredi 11 avril de 11h00 à 12h00 - Salle réunion PMMH 1
Physics of animal collective behavior : interactions with one another and their environment
The breathtaking aerial displays and mesmerizing formations of birds, fish shoals and the thunderous gallop of hundreds of horses exemplify captivating group behaviors in nature. Traditional measurement methods fall short in capturing these intricate behaviors arising from simple individual interactions, (…) -
Séminaire PMMH
Vendredi 4 avril de 11h00 à 12h00 - Salle réunion PMMH 1
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Séminaire PMMH - Pascale Aussillous, Polytech' & Aix Marseille Université
Vendredi 28 mars de 11h00 à 12h00 - Salle réunion PMMH 1
Discharge Flow of a Granular Media from a Silo : Experimental investigations and continuum modeling
Silos are widely used in the industry. While empirical predictions of the flow rate, based on scaling law, exist for more than a century, recently advances have been made on the understanding of the control parameters of the flow. In particular using a continuum model together with a visco-plastic frictional (…) -
Séminaire PMMH – Anand U. Oza (NJIT, USA)
Vendredi 14 mars de 11h00 à 12h00 - Salle réunion PMMH 1
Coarse-grained models for schooling swimmers in fast flows
The beautiful displays exhibited by fish schools and bird flocks have long fascinated scientists, but the role of their complex behavior remains largely unknown. In particular, the influence of hydrodynamic interactions on schooling and flocking has been the subject of debate in the scientific literature. I will (…) -
Séminaire PMMH - Imgard Bischofberger, MIT
Vendredi 7 mars de 11h00 à 12h00 - Salle réunion PMMH 1
Flowing through a world of patterns
Why is there so much structure, order and texture to life and nature, rather than a featureless expanse ? From microscopic snowflakes to dried mud and vast river networks, pattern formation gives rise to systems of extraordinary intricacy and beauty. Understanding how a system spontaneously selects its overall (…)
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
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