BPCPPDYSOE21 – scientific programme

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BP: Fachverband Biologische Physik

BP 24: Poster B: Active Biological Matter, Cell Mechanics, Systems Biology, Computational Biophysics, etc.

BP 24.10: Poster

Tuesday, March 23, 2021, 16:00–18:30, BPp

Simulations of Structure Formation by Dipolar Active Particles — •Vitali Telezki and Stefan Klumpp — Institute for the Dynamics of Complex Systems, University of Göttingen, Germany

Dipolar swimmers describe a class of artificial and biological active particles with an internal magnetic moment. Because of the interplay between different physical interactions such as steric, hydrodynamic and magnetic interactions, complex collective behaviour is expected to emerge in dense systems of dipolar swimmers.

We use Brownian dynamics simulations to investigate the collective behaviour of these dipolar swimmers. We focus on the structure formation of dipolar swimmers in small confined systems and analyze what structures can emerge and how they depend on the self-propulsion speed and the magnetic strength of the swimmers. We are particularly interested in the effect of the geometry and the interactions with the confinement on the emerging structures. In addition, we study how external magnetic fields influence the collective behaviour of large systems of dipolar swimmers.