Clustering of Magnetic Swimmers in a Poiseuille Flow
arXiv:1710.08339 · doi:10.1103/PhysRevLett.120.188101
Abstract
We investigate the collective behavior of magnetic swimmers, which are suspended in a Poiseuille flow and placed under an external magnetic field, using analytical techniques and Brownian dynamics simulations. We find that the interplay between intrinsic activity, external alignment, and magnetic dipole-dipole interactions leads to longitudinal structure formation. Our work sheds light on a recent experimental observation of a clustering instability in this system.
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