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Dresden 2020 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 2: Active Matter I (joint session BP/CPP/DY)

DY 2.1: Hauptvortrag

Montag, 16. März 2020, 09:30–10:00, HÜL 386

Spontaneous and driven active matter flows — •Eric Clement — PMMH-ESPCI-Sorbonne University, Paris, France

Understanding the individual and the macroscopic transport properties of motile micro-organisms in complex environments is a timely question, relevant to many ecological, medical and technological situations. At the fundamental level, this question is also receiving a lot of attention as fluids loaded with swimming micro-organisms has become a rich domain of applications and a conceptual playground for the statistical physics of active matter. The existence of microscopic sources of energy borne by the motile character of micro-swimmers is driving self-organization processes at the origin of original emergent phases and unconventional macroscopic properties leading to revisit many standard concepts in the physics of suspensions. In this presentation, I will report on a recent exploration on the question of collective motionspontaneous formation, in relation with the rheological response of active suspensions. I will also present new experiments showing how the motility of bacteria can be controlled such as to extract work macroscopically.

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