Dresden 2014 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 17: Microswimmers (joint DY/BP)
BP 17.7: Vortrag
Dienstag, 1. April 2014, 11:15–11:30, ZEU 146
Transport powered by bacterial turbulence — •Andreas Kaiser1, Anton Peshkov2, Andrey Sokolov3, Borge ten Hagen1, Hartmut Löwen1, and Igor S. Aranson3 — 1Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf — 2Service de Physique de l’Etat Condensé, Gif-sur-Yvette — 3Materials Science Division, Argonne National Laboratory
We show that turbulence in a bacterial bath can be exploited to power and steer directed transport of mesoscopic carriers through the suspension. In our experiments and simulations, a microwedge-like "bulldozer" is exposed to a bacterial bath of varied concentration and obtains a maximal transport speed in the turbulent state of the bacterial suspension.