Moving Fluid with Bacterial Carpets

From: Biophysical Journal | Date: March 1, 2004| Author: Darnton, Nicholas; Turner, Linda; Breuer, Kenneth; Berg, Howard C | Copyright information

ABSTRACT

We activated a solid-fluid interface by attaching flagellated bacteria to a solid surface. We adsorbed swarmer cells of Serratia marcescens to polydimethylsiloxane or polystyrene. The cell bodies formed a densely packed monolayer while their flagella continued to rotate freely. Motion of the fluid close to an extended flat surface, visualized with tracer beads, was dramatically enhanced compared to the motion farther away. The tracer beads revealed complex ever-changing flow p...

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