Active particles in complex and crowded environments

C Bechinger, R Di Leonardo, H Löwen… - Reviews of modern …, 2016 - APS
Differently from passive Brownian particles, active particles, also known as self-propelled
Brownian particles or microswimmers and nanoswimmers, are capable of taking up energy …

Time irreversibility in active matter, from micro to macro

J O'Byrne, Y Kafri, J Tailleur, F van Wijland - Nature Reviews Physics, 2022 - nature.com
Active matter encompasses systems whose individual constituents dissipate energy to exert
propelling forces on their environment. These systems exhibit dynamical phenomena with …

Statistical mechanics of active Ornstein-Uhlenbeck particles

D Martin, J O'Byrne, ME Cates, É Fodor, C Nardini… - Physical Review E, 2021 - APS
We study the statistical properties of active Ornstein-Uhlenbeck particles (AOUPs). In this
simplest of models, the Gaussian white noise of overdamped Brownian colloids is replaced …

How far from equilibrium is active matter?

É Fodor, C Nardini, ME Cates, J Tailleur, P Visco… - Physical review …, 2016 - APS
Active matter systems are driven out of thermal equilibrium by a lack of generalized Stokes-
Einstein relation between injection and dissipation of energy at the microscopic scale. We …

Irreversibility in active matter systems: Fluctuation theorem and mutual information

L Dabelow, S Bo, R Eichhorn - Physical Review X, 2019 - APS
We consider a Brownian particle which, in addition to being in contact with a thermal bath, is
driven by fluctuating forces which stem from active processes in the system, such as self …

Cluster phases and bubbly phase separation in active fluids: reversal of the Ostwald process

E Tjhung, C Nardini, ME Cates - Physical Review X, 2018 - APS
It is known that purely repulsive self-propelled colloids can undergo bulk liquid-vapor phase
separation. In experiments and large-scale simulations, however, more complex steady …

Disordered collective motion in dense assemblies of persistent particles

YE Keta, RL Jack, L Berthier - Physical Review Letters, 2022 - APS
We explore the emergence of nonequilibrium collective motion in disordered nonthermal
active matter when persistent motion and crowding effects compete, using simulations of a …

Multidimensional stationary probability distribution for interacting active particles

C Maggi, UMB Marconi, N Gnan, R Di Leonardo - Scientific reports, 2015 - nature.com
We derive the stationary probability distribution for a non-equilibrium system composed by
an arbitrary number of degrees of freedom that are subject to Gaussian colored noise and a …

Autonomous engines driven by active matter: Energetics and design principles

P Pietzonka, É Fodor, C Lohrmann, ME Cates, U Seifert - Physical Review X, 2019 - APS
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 …

Active particles with soft and curved walls: Equation of state, ratchets, and instabilities

N Nikola, AP Solon, Y Kafri, M Kardar, J Tailleur… - Physical review …, 2016 - APS
We study, from first principles, the pressure exerted by an active fluid of spherical particles
on general boundaries in two dimensions. We show that, despite the nonuniform pressure …