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- W2022425301 abstract "Self-propelled pointlike particles move along circular trajectories when their translocation velocity is constant and the angular velocity related to their orientation vector is also constant. We investigate the collective behavior of ensembles of such circle swimmers by Brownian dynamics simulations. If the particles interact via a ``velocity-trajectory coordination'' rule within neighboring particles, a self-organized vortex pattern emerges. This vortex pattern is characterized by its particle-density correlation function ${G}_{ensuremath{rho}}$, the density correlation function ${G}_{c}$ of trajectory centers, and an order parameter $S$ representing the degree of the aggregation of the particles. Here we systematically vary the system parameters, such as the particle density and the interaction range, in order to reveal the transition of the system from a light-vortex-dominated to heavy-vortex-dominated state, where vortices contain mainly a single and many self-propelled particles, respectively. We also study a semidilute solution of curved, sinusoidal-beating flagella, as an example of circling self-propelled particles with explicit propulsion mechanism and excluded-volume interactions. Our simulation results are compared with previous experimental results for the vortices in sea-urchin sperm solutions near a wall. The properties of the vortices in simulations and experiments are found to agree quantitatively." @default.
- W2022425301 created "2016-06-24" @default.
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- W2022425301 date "2014-01-28" @default.
- W2022425301 modified "2023-10-16" @default.
- W2022425301 title "Self-organized vortices of circling self-propelled particles and curved active flagella" @default.
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- W2022425301 doi "https://doi.org/10.1103/physreve.89.012720" @default.
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