Francesc Sagués (Universitat de Barcelona)

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Contact : ramiro@pmmh.espci.fr

9 décembre 2011 11:00 » 12:00 — A4 (Langevin)

Séminaire PMMH

Driven paramagnetic colloids : from ratchets to swimmers

I will briefly review some recent experimental and theoretical work on driven paramagnetic colloids either dispersed on structured or unstructured supports. In the first part the realization of modes of discrete transport of particles on patterned magnetic substrates will be presented. I will discuss in this context both features of individual enhanced diffusion as well as signatures of collective motion in transported colloidal chains. In the second part I will concentrate on colloidal-based swimmers either moving autonomoulsy or driven by a precessing magnetic field.

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