ACTIVE GRANULAR MATTER
Mardi 10 juin 2014 11:00
- Duree : 1 heure
Lieu : Conference room - LIPhy - Bât E - 140 Avenue de la Physique - St Martin d’Hères. Accès par interphone, appeler le secrétariat
Orateur : Arshad KUDROLLI (Complex Matter and Nonlinear Physics Laboratory, Clark University, Worcester, USA)
We discuss experiments designed with granular matter to develop the physics of self-propelled particle systems which move and interact via simple physical rules. The shape and mass distribution of a particle can be exploited to fabricate elements which perform random motions or directed random walks on a vibrated plate. The number density is varied from the dilute to the dense regime where they can move freely or suffer dynamical arrest. We will discuss the self-diffusion and density fluctuations of the self-propelled particles as a function of their degree of shape anisotropy and self-propulsion. We will give several examples of dynamic collective behavior which arises including clustering, swarming, and vortex motion depending on the individual interactions with neighboring particles. We will further examine the broader role of particle shape and discuss the application of models drawn from polymer physics on the packing and dynamics of granular matter.
Contact : chaouqi.misbah@ujf-grenoble.fr
Discipline évènement : (Physique)
Entité organisatrice : (LIPhy)
Nature évènement : (Séminaire)
Evènement répétitif : (Séminaire Mat. Molle/grise)
Site de l'évènement : Domaine Universitaire de St Martin d’Hères
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