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Biophysics underlying the swarm to biofilm transition
Vasco M. Worlitzer, Ajesh Jose, Ilana Grinberg +5
Bacteria organize in a variety of collective states, from swarming, which has been attributed to rapid surface exploration, to biofilms, which are highly dense immobile communities…
Diffusion properties of active particles with directional reversal
Robert Großmann, Fernando Peruani, Markus Bär
The diffusion properties of self-propelled particles which move at constant speed and, in addition, reverse their direction of motion repeatedly are investigated. The internal dyna…
A geometric approach to self-propelled motion in isotropic and anisotropic environments
Robert Großmann, Fernando Peruani, Markus Bär
We propose a geometric perspective to describe the motion of self-propelled particles moving at constant speed in d dimensions. We exploit the fact that the vector that conveys the…
Cluster dynamics and cluster size distributions in systems of self-propelled particles
Fernando Peruani, Lutz Schimansky-Geier, Markus Baer
Systems of self-propelled particles (SPP) interacting by a velocity alignment mechanism in the presence of noise exhibit a rich clustering dynamics. It can be argued that clusters…
Polar vs. apolar alignment in systems of polar self-propelled particles
Fernando Peruani, Francesco Ginelli, Markus Bar +1
The symmetry of the alignment mechanism in systems of polar self-propelled particles determines the possible macroscopic large-scale patterns that can emerge. Here we compare polar…
Rippling patterns in aggregates of myxobacteria arise from cell-cell collisions
Uwe Boerner, Andreas Deutsch, Hans Reichenbach +1
Experiments with myxobacterial aggregates reveal standing waves called rippling patterns. Here, these structures are modelled with a simple discrete model based on the interplay be…