Issue 33, 2023

Controlling the transport of the mixture involving active and passive rods in confined channel

Abstract

The transport of the binary mixture of self-propelled rods (SPRs) and passive rods in the asymmetric conjugate periodic channel is studied by dissipative particle dynamics (DPD) simulations. It is found that the autonomous pumping of the binary mixture of active and passive rods can be achieved by either the individual or collective behaviour of SPRs. More specifically, the transport of passive rods can be driven through the individual, collective jostlement of the active rods, and crowding out effect. The strength of self-propulsion, rod length, rod concentration, and geometric feature of the channel determines the mechanism of pumping. In addition, the drift of the binary mixture can be in the positive and negative directions of the channel or the currents of SPRs and passive rods in opposite directions and relies on the geometric feature of the channel and concentration of the two species. Overall, our simulation study offers an efficient approach of flow control for both species.

Graphical abstract: Controlling the transport of the mixture involving active and passive rods in confined channel

Article information

Article type
Paper
Submitted
18 Apr 2023
Accepted
31 Jul 2023
First published
01 Aug 2023

Soft Matter, 2023,19, 6368-6375

Controlling the transport of the mixture involving active and passive rods in confined channel

Z. Wang and J. Hao, Soft Matter, 2023, 19, 6368 DOI: 10.1039/D3SM00523B

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