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6 janvier 2020: 1 événement

  • Séminaires Invités

    Lundi 6 janvier 14:00-15:30 - Sophie Marbach - Courant Institute for Mathematical Sciences, New York University, NY, USA

    Nanoscale Caterpillars or How to Achieve Complex Motion with Random Sticky Feet ?

    Résumé : Beating equilibrium diffusion is a paradigm challenge that biological or artificial systems of small particles have to face to achieve complex functions. Some cells (like leucocytes) use ligand-receptor contacts (sticky feet) to crawl and roll along vessels. Sticky DNA (another type of sticky feet) is coated on colloids to design programmable interactions and long-range assembly features. First of all, the equilibrium characteristics of sticky feet are quite entangled since a number of different forces control adhesion. Second, the dynamics of such sticky motion are intricate as sticky events (attaching/detaching) often occur on very short time scales compared to the overall motion of the particle. This makes predictions of equilibrium and dynamic properties highly challenging. Here I will fully rationalize what parameters control both equilibrium and dynamic (diffusion and sub-diffusion) properties and compare them to existing systems.

    contact : Cyril Picard

    Lieu : LIPhy, conference room - 140 Avenue de la Physique 38402 Saint Martin d’Hères

    En savoir plus : Séminaires Invités