Microfluidics is revolutionizing the way we study the motile behavior of cells, by enabling
observations at high spatial and temporal resolution in carefully controlled …

Self-sustained turbulent structures have been observed in a wide range of living fluids, yet
no quantitative theory exists to explain their properties. We report experiments on active …

The rheological response under simple shear of an active suspension of Escherichia coli is
determined in a large range of shear rates and concentrations. The effective viscosity and …

Measurements of the shear viscosity in suspensions of swimming Bacillus subtilis in free-
standing liquid films have revealed that the viscosity can decrease by up to a factor of 7 …

We demonstrate a method for the fast, high-throughput characterization of the dynamics of
active particles. Specifically, we measure the swimming speed distribution and motile cell …

Chemotactic bacteria are known to collectively migrate towards sources of attractants. In
confined convectionless geometries, concentration “waves” of swimming Escherichia coli …

We study experimentally and numerically the dynamics of colloidal beads confined by a
harmonic potential in a bath of swimming E. coli bacteria. The resulting dynamics is well …

Bacterial communities attached to surfaces under fluid flow represent a widespread lifestyle
of the microbial world. Through shear stress generation and molecular transport regulation …

The flagellated bacterium Escherichia coli is increasingly used experimentally as a self-
propelled swimmer. To obtain meaningful, quantitative results that are comparable between …

Localized structures (LSs) in dissipative media appear in various fields of natural science
such as biology, chemistry, plant ecology, optics and laser physics. The proposal for this …