Differently from passive Brownian particles, active particles, also known as self-propelled
Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy …

Active matter encompasses systems whose individual constituents dissipate energy to exert
propelling forces on their environment. These systems exhibit dynamical phenomena with …

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

Small composite objects, known as Janus particles, drive sustained scientific interest
primarily targeted at biomedical applications, where such objects act as micro-or nanoscale …

Ratchet effects can arise for single or collectively interacting Brownian particles on an
asymmetric substrate when a net dc transport is produced by an externally applied ac …

Stochastic heat engines can be built using colloidal particles trapped using optical tweezers.
Here we review recent experimental realizations of microscopic heat engines. We first revisit …

We develop a statistical theory for the dynamics of non-aligning, non-interacting self-
propelled particles confined in a convex box in two dimensions. We find that when the size …

Because of its nonequilibrium character, active matter in a steady state can drive engines
that autonomously deliver work against a constant mechanical force or torque. As a generic …

Self-propelled particles can exhibit surprising non-equilibrium behaviors, and how they
interact with obstacles or boundaries remains an important open problem. Here we show …

Spherical Janus particles are one of the most prominent examples for active Brownian
objects. Here, we study the diffusiophoretic motion of such microswimmers in experiment …