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 …

Colloquium: Inclusions, boundaries, and disorder in scalar active matter

O Granek, Y Kafri, M Kardar, S Ro, J Tailleur… - Reviews of Modern …, 2024 - APS
Active systems are driven out of equilibrium by exchanging energy and momentum with their
environment. This endows them with anomalous mechanical properties that are reviewed in …

Emergent behavior in active colloids

A Zöttl, H Stark - Journal of Physics: Condensed Matter, 2016 - iopscience.iop.org
Active colloids are microscopic particles, which self-propel through viscous fluids by
converting energy extracted from their environment into directed motion. We first explain …

Pressure is not a state function for generic active fluids

AP Solon, Y Fily, A Baskaran, ME Cates, Y Kafri… - Nature physics, 2015 - nature.com
Pressure is the mechanical force per unit area that a confined system exerts on its container.
In thermal equilibrium, it depends only on bulk properties—such as density and temperature …

Pressure and phase equilibria in interacting active Brownian spheres

AP Solon, J Stenhammar, R Wittkowski, M Kardar… - Physical review …, 2015 - APS
We derive a microscopic expression for the mechanical pressure P in a system of spherical
active Brownian particles at density ρ. Our exact result relates P, defined as the force per unit …

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 …

An active approach to colloidal self-assembly

SA Mallory, C Valeriani… - Annual review of physical …, 2018 - annualreviews.org
In this review, we discuss recent advances in the self-assembly of self-propelled colloidal
particles and highlight some of the most exciting results in this field, with a specific focus on …

Nonequilibrium strongly hyperuniform fluids of circle active particles with large local density fluctuations

QL Lei, MP Ciamarra, R Ni - Science advances, 2019 - science.org
Disordered hyperuniform structures are an exotic state of matter having vanishing long-
wavelength density fluctuations similar to perfect crystals but without long-range order …

Hydrodynamics-induced long-range attraction between plates in bacterial suspensions

L Ning, X Lou, Q Ma, Y Yang, N Luo, K Chen, F Meng… - Physical Review Letters, 2023 - APS
We perform optical-tweezers experiments and mesoscale fluid simulations to study the
effective interactions between two parallel plates immersed in bacterial suspensions. The …

Active particles under confinement and effective force generation among surfaces

L Caprini, UMB Marconi - Soft matter, 2018 - pubs.rsc.org
We consider the effect of geometric confinement on the steady-state properties of a one-
dimensional active suspension subject to thermal noise. The random active force is modeled …