Chiral active matter

B Liebchen, D Levis - Europhysics Letters, 2022 - iopscience.iop.org
Chiral active matter comprises particles which can self-propel and self-rotate. Examples
range from sperm cells and bacteria near walls to autophoretic L-shaped colloids. In this …

Microscopic theory for the diffusion of an active particle in a crowded environment

P Rizkallah, A Sarracino, O Bénichou, P Illien - Physical Review Letters, 2022 - APS
We calculate the diffusion coefficient of an active tracer in a schematic crowded
environment, represented as a lattice gas of passive particles with hardcore interactions …

The role of disorder in the motion of chiral active particles in the presence of obstacles

DM Van Roon, G Volpe, MMT da Gama, NAM Araújo - Soft Matter, 2022 - pubs.rsc.org
The presence of obstacles is intuitively expected to hinder the diffusive transport of active
particles. However, for chiral active particles, a low density of obstacles near a surface can …

Active Brownian and inertial particles in disordered environments: Short-time expansion of the mean-square displacement

D Breoni, M Schmiedeberg, H Löwen - Physical Review E, 2020 - APS
We consider an active Brownian particle moving in a disordered two-dimensional energy or
motility landscape. The averaged mean-square displacement (MSD) of the particle is …

Analytical approach to chiral active systems: suppressed phase separation of interacting Brownian circle swimmers

J Bickmann, S Bröker, J Jeggle… - The Journal of Chemical …, 2022 - pubs.aip.org
We consider chirality in active systems by exemplarily studying the phase behavior of planar
systems of interacting Brownian circle swimmers with a spherical shape. For this purpose …

Optimal diffusion of chiral active particles with strategic reorientations

KS Olsen, H Löwen - Physical Review E, 2024 - APS
We investigate the competing effects of the simultaneous presence of chirality and
generalized tumbles in the dynamics of an active Brownian particle. Chiral active particles …

Hyper-Ballistic Superdiffusion of Competing Microswimmers

KS Olsen, A Hansen, EG Flekkøy - Entropy, 2024 - mdpi.com
Hyper-ballistic diffusion is shown to arise from a simple model of microswimmers moving
through a porous media while competing for resources. By using a mean-field model where …

Self-reverting vortices in chiral active matter

L Caprini, B Liebchen, H Löwen - Communications Physics, 2024 - nature.com
There is currently a strong interest in the collective behavior of chiral active particles that can
propel and rotate themselves. In the presence of alignment interactions for many chiral …

Emergent mesoscale correlations in active solids with noisy chiral dynamics

A Shee, S Henkes, C Huepe - Soft Matter, 2024 - pubs.rsc.org
We present the linear response theory for an elastic solid composed of active Brownian
particles with intrinsic individual chirality, deriving both a normal mode formulation and a …

Enhanced rotational diffusion and spontaneous rotation of an active Janus disk in a complex fluid

M De Corato, P Martínez-Lera - Soft Matter, 2025 - pubs.rsc.org
Active colloids and self-propelled particles moving through microstructured fluids can
display different behavior compared to what is observed in simple fluids. As they are driven …