8 papers
Simulating active agents under confinement with Dissipative Particles (hydro)Dynamics
C. Miguel Barriuso G., Jose Martin-Roca, Valentino Bianco +2
We study active agents embedded in bulk or in confinement explicitly considering hydrodynamics and simulating the swimmers via an implementation inspired by the squirmer model. We…
Active spin model for cell assemblies on 1D substrates
Harshal Potdar, Ignacio Pagonabarraga, Sudipto Muhuri
The experimental use of micropatterned quasi-1D substrates has emerged as an useful experimental tool to study the nature of cell-cell interactions and gain insight on collective b…
Segregation and cooperation in active colloidal binary mixtures
Laura Alvarez, Elena Sesé-Sansa, Demian Levis +2
The complex interactions underlying collective motion in biological systems give rise to emergent behaviours such as flocking, sorting, and cooperative transport. These dynamics of…
Phase separation in a chiral active fluid of inertial self-spinning disks
Pasquale Digregorio, Ignacio Pagonabarraga, Francisco Vega Reyes
We show that systematic particle rotations in a fluid composed of disk-shaped spinners can spontaneously lead to phase separation. The phenomenon arises out of a homogeneous and hy…
Activity leads to topological phase transition in 2D populations of heterogeneous oscillators
Ylann Rouzaire, Parisa Rahmani, Ignacio Pagonabarraga +2
Populations of heterogeneous, noisy oscillators on a two-dimensional lattice display short-range order. Here, we show that if the oscillators are allowed to actively move in space,…
Non-Reciprocal Interactions Reshape Topological Defect Annihilation
Ylann Rouzaire, Daniel JG Pearce, Ignacio Pagonabarraga +1
We show how non-reciprocal ferromagnetic interactions between neighbouring planar spins in two dimensions, affect the behaviour of topological defects. Non-reciprocity is introduce…