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arXiv · 1503.06454

Run-and-Tumble Dynamics of Self-Propelled Particles in Confinement

Jens Elgeti·Gerhard Gompper
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Abstract

Run-and-tumble dynamics is a wide-spread mechanism of swimming bacteria. The accumulation of run-and-tumble microswimmers near impermeable surfaces is studied theoretically and numerically in the low-density limit in two and three spatial dimensions. Both uni-modal and exponential distributions of the run lengths are considered. Constant run lengths lead to {peaks and depletions regions} in the density distribution of particles near the surface, in contrast to {exponentially-distributed run lengths}. Finally, we present a universal accumulation law for large channel widths, which applies not only to run-and-tumble swimmers, but also to many other kinds of self-propelled particles.

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BibTeXRIS

Jens Elgeti, Gerhard Gompper. 2015-03-22. Run-and-Tumble Dynamics of Self-Propelled Particles in Confinement. https://doi.org/10.1209/0295-5075/109/58003

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