Dynamics of active filaments in porous media

Abstract

The motion of active polymers in a porous medium is shown to depend critically on flexibilty, activity and degree of polymerization. For given Peclet number, we observe a transition from localisation to diffusion as the stiffness of the chains is increased. Whereas stiff chains move almost unhindered through the porous medium, flexible ones spiral and get stuck. Their motion can be accounted for by the model of a continuous time random walk with a renewal process corresponding to unspiraling. The waiting time distribution is shown to develop heavy tails for decreasing stiffness, resulting in subdiffusive and ultimately caged behaviour.

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Cited by in corpus (13)

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• Migration of Active Rings in Porous Media
• Active Dynamics of Linear Chains and Rings in Porous Media
• Locomotion of Active Polymerlike Worms in Porous Media
• Bacterial diffusion in disordered media, by forgetting the media
• Spontaneous trail formation in populations of auto-chemotactic walkers
• Tangentially Active Polymers in Cylindrical Channels
• Folding-unfolding transition of active polymer on the reconfiguration of bidirectional tangential active force
• Dynamic Phases and Combing Effects for Elongated Particles Moving Over Quenched Disorder