Swimming bacteria in Poiseuille flow: the quest for active Bretherton-Jeffery trajectories

29 May 2019 Junot Gaspard Figueroa-Morales Nuris Darnige Thierry Lindner Anke Soto Rodrigo Auradou Harold Clément Eric

Using a 3D Lagrangian tracking technique, we determine experimentally the trajectories of non-tumbling E. coli mutants swimming in a Poiseuille flow. We identify a typology of trajectories in agreement with a kinematic "active Bretherton-Jeffery" model, featuring an axi-symmetric self-propelled ellipsoid... (read more)

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Categories


  • FLUID DYNAMICS
  • SOFT CONDENSED MATTER