Bacteria are among the oldest and most abundant species on Earth. Bacteria successfully
colonize diverse habitats and play a significant role in the oxygen, carbon, and nitrogen …

Bacterial swarming is a collective mode of motion in which cells migrate rapidly over
surfaces, forming dynamic patterns of whirls and jets. This review presents a physical point …

Microswimmers exhibit an intriguing, highly-dynamic collective motion with large-scale
swirling and streaming patterns, denoted as active turbulence–reminiscent of classical high …

A suspension of swimming bacteria is possibly the simplest realization of active matter, ie a
class of systems transducing stored energy into mechanical motion. Collective swimming of …

Bacterial swarming is a rapid mass-migration, in which thousands of cells spread collectively
to colonize surfaces. Physically, swarming is a natural example for active particles that use …

Although migrations are essential for soil microorganisms to exploit scarce and
heterogeneously distributed resources, bacterial mobility in soil remains poorly studied due …

We experimentally study the emergence of collective bacterial swimming, a phenomenon
often referred to as bacterial turbulence. A phase diagram of the flow of 3D Escherichia coli …

Collective motion of self-sustained swarming flows has recently provided examples of small-
scale turbulence arising where viscous effects are dominant. We report the first observation …

Active matter exhibits various forms of nonequilibrium states in the absence of external
forcing, including macroscopic steady-state currents. Such states are often too complex to be …

We simulate clustering, phase separation and hexatic ordering in a monolayered
suspension of active squirming disks subject to an attractive Lennard-Jones-like pairwise …