Emergent swarming states in active particles system with opposite anisotropic interactions
From the organization of animal flocks to the emergence of swarming behaviors in bacterial suspension, populations of motile organisms at all scales display coherent collective motion. Recent studies showed that the anisotropic interaction between active particles plays a key role in the phase behav...
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Veröffentlicht in: | Chinese journal of chemical physics 2020-12, Vol.33 (6), p.717-726 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | From the organization of animal flocks to the emergence of swarming behaviors in
bacterial suspension, populations of motile organisms at all scales display
coherent collective motion. Recent studies showed that the anisotropic
interaction between active particles plays a key role in the phase behaviors.
Here we investigate the collective behaviors of based-active Janus particles
that experience an anisotropic interaction of which the orientation is opposite
to the direction of active force by using Langevin dynamics simulations in two
dimensional space. Interestingly, the system shows emergence of collective
swarming states upon increasing the total area fraction of particles, which is
not observed in systems without anisotropic interaction or activity. The
threshold for emergence of swarming states decreases as particle activity or
interaction strength increases. We have also performed basic kinetic analysis to
reproduce the essential features of the simulation results. Our results
demonstrate that anisotropic interactions at the individual level are sufficient
to set homogeneous active particles into stable directed motion. |
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ISSN: | 1674-0068 2327-2244 |
DOI: | 10.1063/1674-0068/cjcp2003037 |