Issue 35, 2017

Complex self-propelled rings: a minimal model for cell motility

Abstract

Collective behavior of active matter is observed for self-propelled particles, such as vibrated disks and active Brownian particles, as well as for cytoskeletal filaments in motile cells. Here, a system of quasi two-dimensional penetrable self-propelled rods inside rigid rings is used to construct a complex self-propelled particle. The rods interact sterically with each other and with a stationary or mobile ring via a separation-shifted Lennard-Jones potential. They either have a sliding attachment to the inside of the ring at one of their ends, or can move freely within the ring confinement. We study the inner structure and dynamics of the mobile self-propelled rings. We find that these complex particles cannot only be characterized as active Brownian particles, but can also exhibit cell-like motility: random walks, persistent motion, circling, and run-and-circle motion.

Graphical abstract: Complex self-propelled rings: a minimal model for cell motility

Supplementary files

Article information

Article type
Paper
Submitted
02 Mar 2017
Accepted
20 Jul 2017
First published
20 Jul 2017

Soft Matter, 2017,13, 5865-5876

Complex self-propelled rings: a minimal model for cell motility

C. Abaurrea Velasco, S. Dehghani Ghahnaviyeh, H. Nejat Pishkenari, T. Auth and G. Gompper, Soft Matter, 2017, 13, 5865 DOI: 10.1039/C7SM00439G

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