1k citations · 1.9k across the 10 of their papers we have counts for
10 papers
Distortion and destruction of colloidal flocks in disordered environments
Alexandre Morin, Nicolas Desreumaux, Jean-Baptiste Caussin +1
How do flocks, herds and swarms proceed through disordered environments? This question is not only crucial to animal groups in the wild, but also to virtually all applications of c…
Pattern formation in flocking models: A hydrodynamic description
Alexandre P. Solon, Jean-Baptiste Caussin, Denis Bartolo +2
We study in detail the hydrodynamic theories describing the transition to collective motion in polar active matter, exemplified by the Vicsek and active Ising models. Using a simpl…
Emergent vortices in populations of colloidal rollers
Antoine Bricard, Jean-Baptiste-Caussin, Debasish Das +7
Coherent vortical motion has been reported in a wide variety of populations including living organisms (bacteria, fishes, human crowds) and synthetic active matter (shaken grains,…
Collective Motion with Anticipation: Flocking, Spinning, and Swarming
Alexandre Morin, Jean-Baptiste Caussin, Christophe Eloy +1
We investigate the collective dynamics of self-propelled particles able to probe and anticipate the orientation of their neighbors. We show that a simple anticipation strategy hind…
Braiding a flock: winding statistics of interacting flying spins
Jean-Baptiste Caussin, Denis Bartolo
When animal groups move coherently in the form of a flock, their trajectories are not all parallel, the individuals exchange their position in the group. In this Letter we introduc…
Tailoring the interactions between self-propelled bodies
Jean-Baptiste Caussin, Denis Bartolo
We classify the interactions between self-propelled particles moving at a constant speed from symmetry considerations. We establish a systematic expansion for the two-body forces i…
Emergent spatial structures in flocking models: a dynamical system insight
Jean-Baptiste Caussin, Alexandre Solon, Anton Peshkov +5
We show that hydrodynamic theories of polar active matter generically possess inhomogeneous traveling solutions. We introduce a unifying dynamical-system framework to establish the…
Emergence of macroscopic directed motion in populations of motile colloids
Antoine Bricard, Jean-Baptiste Caussin, Nicolas Desreumaux +2
From the formation of animal flocks to the emergence of coordinate motion in bacterial swarms, at all scales populations of motile organisms display coherent collective motion. Thi…
Hydrodynamic fluctuations in confined emulsions
Nicolas Desreumaux, Jean-Baptiste Caussin, Raphael Jeanneret +2
When an ensemble of particles interact hydrodynamically, they generically display large-scale transient structures such as swirls in sedimenting particles [1], or colloidal strings…
Hydrodynamics of confined active fluids
Tommaso Brotto, Jean-Baptiste Caussin, Eric Lauga +1
We theoretically describe the dynamics of swimmer populations confined in thin liquid films. We first demonstrate that hydrodynamic interactions between confined swimmers only depe…