Seminars

PMMH’s weekly seminar is held every Friday at 11 am (map)

Contact :
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
responsables-seminaires (arobase) pmmh.espci.fr

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 - Thomas Lessinnes (EPFL)

Vendredi 19 octobre 2018 de 11h00 à 12h00 - Salle réunion PMMH 1

New tools for the mechanics of biofilaments

Many biological objects present themselves as elongated slender structures. One may for instance mention proteins, polymers, DNA, bacterial fibres, fungi, stems, roots, arteries or neurons to cite but a few. It so happens that these bio-filaments are often organised as bundles of sub-filaments. The interplay of the growth and mechanical properties of these sub-entities generates the subtle geometric and mechanical properties of the global structure.

In this presentation, I will cover recent advances and point out exciting challenges in three key problems. How to infer the mechanical properties of the filament from their microscopic structure ? How to infer the macroscopic properties of spring like filaments ? How to effortlessly decide the stability of various equilibria ? We will see that these problems raise interesting mathematical questions but also that they are of direct practical relevance. Some of our examples will be drawn from biology and others from man-made structures, all of them will involve nonlinear equations and stratagems for handling them.

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Information for the speakers

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.

Link to cofee seminar (internal, every Thursday)


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Practical information

Laboratoire : 01 40 79 45 22
Directeur : Ramiro GODOY DIANA
Codirecteur : Laurent DUCHEMIN
Administratrice : Frédérique AUGER (01 40 79 45 22)
Gestionnaire : Claudette BAREZ (01 40 79 58 53)
Courriel : dir (arobase) pmmh.espci.fr