Active matter, which ranges from molecular motors to groups of animals, exists at different
length scales and timescales, and various computational models have been proposed to …

Locomotion and transport of microorganisms in fluids is an essential aspect of life. Search
for food, orientation toward light, spreading of off-spring, and the formation of colonies are …

Active colloids are microscopic particles, which self-propel through viscous fluids by
converting energy extracted from their environment into directed motion. We first explain …

Self-propelled particles include both self-phoretic synthetic colloids and various
microorganisms. By continually consuming energy, they bypass the laws of equilibrium …

We study experimentally and numerically a (quasi-) two-dimensional colloidal suspension of
self-propelled spherical particles. The particles are carbon-coated Janus particles, which are …

Active particles contain internal degrees of freedom with the ability to take in and dissipate
energy and, in the process, execute systematic movement. Examples include all living …

Cell motility in viscous fluids is ubiquitous and affects many biological processes, including
reproduction, infection and the marine life ecosystem. Here we review the biophysical and …

Abstract Active Brownian particles (ABPs, such as self-phoretic colloids) swim at fixed speed
v along a body-axis u that rotates by slow angular diffusion. Run-and-tumble particles …

Concentrated suspensions of swimming microorganisms and other forms of active matter
are known to display complex, self-organized spatiotemporal patterns on scales that are …

Microbiology is the science of microbes, particularly bacteria. Many bacteria are motile: they
are capable of self-propulsion. Among these, a significant class execute so-called run-and …