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 - Kirsten Martens (LIPhy, Univ. Grenoble Alpes)
Fluidization of yield stress materials through active and activated local events
In this talk I will discuss the possible fluidization mecanisms of yield stress materials through either locally active dynamics, like cell division in tissues [1,2] or vibration induced local plasticity like in externally driven granular materials [3]. The long range elastic response to these events lead to a non-trivial fluidization of the material, that can be captured in particle-based simulations and rationalized by using mesoscopic descriptions. This allows to understand the underlying dynamics and to reproduce the resulting non-linear rheological behaviours.
[1] D. A. Matoz-Fernandez, E. Agoritsas, J.-L. Barrat, E. Bertin and K. Martens, Nonlinear Rheology in a Model Biological Tissue, PRL, 118, 158105 (2017).
[2] D. A. Matoz-Fernandez, K. Martens, R. Sknepnek, J.-L. Barrat and S. Henkes, Cell Division and Death Inhibit Glassy Behaviour of Confluent Tissues, Soft matter, 13, 3205 (2017).
[3] M. Le Goff, V. Vasisht and K. Martens, Vibration Induced Fluidization of Yield Stress Materials, to be submitted soon.
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)
