Regensburg 2022 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 46: Poster Session: Complex Fluids, Soft Matter, Active Matter, Glasses and Granular Materials

DY 46.8: Poster

Donnerstag, 8. September 2022, 15:00–18:00, P2

Cohesive rotation of particles with misaligned perception-dependent motility — •Rodrigo Saavedra, Gerhard Gompper, and Marisol Ripoll — Institute of Biological Information and Institute for Advanced Simulation, Forschungszentrum Jülich, Germany

Systems of agents with discontinuous motility that activate according to visual perception rules have been found to aggregate into cohesive groups. Here we study the formation of rotating cohesive clusters by considering the particles' vision cone to have a fixed misalignment with respect to the self-propulsion direction. Together with the motility rule, we find this mechanism to facilitate both cohesion and rotation of the cluster. The presence of steric interactions translates into a compact cluster which might eventually be driven by particles in its outer layer. We systematically explore the effect of misalignment and perception on the cluster morphology by means of particle-based numerical simulations. We find good agreement of the results with a proposed coarse-grained model.