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Issue 45, 2014
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Motility versus fluctuations in mixtures of self-motile and passive agents

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Abstract

Many biological systems consist of self-motile and passive agents both of which contribute to overall functionality. However, little is known about the properties of such mixtures. Here we formulate a model for mixtures of self-motile and passive agents and show that the model gives rise to three different dynamical phases: a disordered mesoturbulent phase, a polar flocking phase, and a vortical phase characterized by large-scale counter rotating vortices. We use numerical simulations to construct a phase diagram and compare the statistical properties of the different phases with observed features of self-motile bacterial suspensions. Our findings afford specific insights regarding the interaction of microorganisms and passive particles and provide novel strategic guidance for efficient technological realizations of artificial active matter.

Graphical abstract: Motility versus fluctuations in mixtures of self-motile and passive agents

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Publication details

The article was received on 16 Jul 2014, accepted on 01 Oct 2014 and first published on 01 Oct 2014


Article type: Paper
DOI: 10.1039/C4SM01562B
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Citation: Soft Matter, 2014,10, 9082-9089

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    Motility versus fluctuations in mixtures of self-motile and passive agents

    D. F. Hinz, A. Panchenko, T. Kim and E. Fried, Soft Matter, 2014, 10, 9082
    DOI: 10.1039/C4SM01562B

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