The fascinating patterns of collective motion created by autonomously driven particles have
fuelled active-matter research for over two decades. So far, theoretical active-matter …

Most swimming bacteria are capable of following gradients of nutrients, signaling molecules
and other environmental factors that affect bacterial physiology. This tactic behavior became …

A wide range of experimental systems including gliding, swarming and swimming bacteria,
in vitro motility assays, and shaken granular media are commonly described as self …

Active constituents burn fuel to sustain individual motion, giving rise to collective effects that
are not seen in systems at thermal equilibrium, such as phase separation with purely …

Active matter agents consume internal energy or extract energy from the environment for
locomotion and force generation. Already, rather generic models, such as ensembles of …

Skin and wound infections are serious medical problems, and the diversity of bacteria
makes such infections difficult to treat. Bacteria possess many virulence factors, among …

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

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 …

In common fluids, viscosity is associated with dissipation. However, when time-reversal
symmetry is broken a new type of nondissipative “viscosity” emerges. Recent theories and …

Whereas self-propelled hard discs undergo motility-induced phase separation, self-
propelled rods exhibit a variety of nonequilibrium phenomena, including clustering …