Swimming Bacteria Stir Up Fluid

The above picture shows a bacteria-induced fluid convection pattern in a half-inch-diameter fluid drop, viewed from above

The above picture shows the vector field of bacterial velocities at the bottom of a drop hanging from the bottom of a petri dish, at high magnification, with prominent regions of circulation evident.

(Images and captions courtesy Raymond Goldstein and colleagues, University of Arizona.)

Reported by: Dombrowski et al., Physical Review Letters, upcoming.

Associated Physics News Update

University of Arizona news release on this work

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