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Mixing and demixing of binary mixtures of polar chiral active particles

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Abstract

We study a binary mixture of polar chiral (counterclockwise or clockwise) active particles in a two-dimensional box with periodic boundary conditions. Besides the excluded volume interactions between particles, the particles are also subjected to the polar velocity alignment. From the extensive Brownian dynamics simulations, it is found that the particle configuration (mixing or demixing) is determined by the competition between the chirality difference and the polar velocity alignment. When the chirality difference competes with the polar velocity alignment, the clockwise particles aggregate in one cluster and the counterclockwise particles aggregate in the other cluster; thus, the particles are demixed and can be separated. However, when the chirality difference or the polar velocity alignment is dominant, the particles are mixed. Our findings could be used for the experimental pursuit of the separation of binary mixtures of chiral active particles.

Graphical abstract: Mixing and demixing of binary mixtures of polar chiral active particles

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Publication details

The article was received on 04 Mar 2018, accepted on 04 May 2018 and first published on 08 May 2018


Article type: Paper
DOI: 10.1039/C8SM00444G
Citation: Soft Matter, 2018, Advance Article
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    Mixing and demixing of binary mixtures of polar chiral active particles

    B. Ai, Z. Shao and W. Zhong, Soft Matter, 2018, Advance Article , DOI: 10.1039/C8SM00444G

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