Transport powered by bacterial turbulence

Andreas Kaiser, Anton Peshkov, Andrey Sokolov, Borge Ten Hagen, Hartmut Löwen, Igor S. Aranson

Research output: Contribution to journalArticle

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Abstract

We demonstrate that collective turbulentlike motion in a bacterial bath can power and steer the directed transport of mesoscopic carriers through the suspension. In our experiments and simulations, a microwedgelike 'bulldozer? draws energy from a bacterial bath of varied density. We obtain that an optimal transport speed is achieved in the turbulent state of the bacterial suspension. This apparent rectification of random motion of bacteria is caused by polar ordered bacteria inside the cusp region of the carrier, which is shielded from the outside turbulent fluctuations.

Original languageEnglish (US)
Article number158101
JournalPhysical Review Letters
Volume112
Issue number15
DOIs
StatePublished - Apr 17 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Kaiser, A., Peshkov, A., Sokolov, A., Ten Hagen, B., Löwen, H., & Aranson, I. S. (2014). Transport powered by bacterial turbulence. Physical Review Letters, 112(15), [158101]. https://doi.org/10.1103/PhysRevLett.112.158101