228 citations · 1.3k across the 63 of their papers we have counts for
10 papers · 1 filter
Metastability and nucleation of bubbles in active chiral systems
Raphael Maire, Alessandro Petrini, Umberto Marini Bettolo Marconi +1
Bubbles frequently emerge in dense chiral active fluids, yet it remains unclear whether they result from an instability of the homogeneous state or from rare nucleation events with…
Critical escape dynamics of an active particle moving on curved surfaces
Maxim Root, Hartmut Löwen, Peter Sollich +2
On the macroscopic scale, active (self-propelled) objects moving through complex environments are often subject to effects arising from both the curvature of the surrounding surfac…
Active embracement enables autonomous tweezing in active star polymers
Marco Musacchio, Davide Breoni, Iman Abdoli +3
The capacity for autonomous structural reconfiguration is a defining trait of living systems, yet it remains elusive in artificial active matter. Here, we report the discovery of a…
Jerky Motion of Active Granular Particles
Alexander P. Antonov, Marco Musacchio, Hartmut Löwen +1
Abrupt transitions between rest and motion can render the standard Newtonian description -- based on position, velocity, and acceleration -- incomplete, requiring higher-order deri…
Magnetic active matter across scales
Francisca Guzmán-Lastra, Margaret Rosenberg, Marco Musacchio +2
Magnetic interactions provide a versatile and powerful tool for controlling and organizing active matter, where individual units continuously consume energy to drive autonomous mot…
Curvature-driven wall accumulation in chiral active particles
Alessandro Petrini, Raphaël Maire, Umberto Marini Bettolo Marconi +1
We study a dilute system of non-motile chiral active particles confined in geometries ranging from straight channels to circular enclosures. Activity is introduced through chiral p…
A particle-resolved rheological study of chirality transfer and odd transport
Rémi Goerlich, Alexander P. Antonov, Kristian Stølevik Olsen +4
Chirality, or the breaking of mirror symmetry, appears across all scales in nature, from molecular conformations to the dynamics of bacterial collectives. Environments composed of…
Sparkling bubbles in chiral active fluids
Alessandro Petrini, Raphaël Maire, Umberto Marini Bettolo Marconi +1
We study an inertial chiral active fluid, formed by repulsive particles that transfer angular momentum through odd interactions, i.e. transverse forces. Chirality induces an inhomo…
Kinetic Theory of Chiral Active Disks: Odd Transport and Torque Density
Raphael Maire, Alessandro Petrini, Umberto Marini Bettolo Marconi +1
Parity-odd transport is a central signature of chiral fluids, yet analytical predictions are sparse. Here, we introduce a minimal two-dimensional hard-disk gas in which chirality a…
Emergent hydrodynamics of chiral active fluids: vortices, bubbles and odd diffusion
Umberto Marini Bettolo Marconi, Alessandro Petrini, Raphaël Maire +1
Starting from a microscopic multiparticle Langevin equation, we systematically derive a hydrodynamic description in terms of density and momentum fields for chiral active particles…