Demixing of active particles in the presence of external fields

Sunita Kumari; Andre S. Nunes; Nuno A. M. Araujo; Margarida Telo da Gama

doi:10.1063/1.4992797

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arXiv · 1706.07633

Demixing of active particles in the presence of external fields

Sunita Kumari·Andre S. Nunes·Nuno A. M. Araujo·Margarida Telo da Gama

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Abstract

Active systems are inherently out of equilibrium, as they collect energy from their surroundings and transform it into directed motion. A recent theoretical study suggests that binary mixtures of active particles with distinct effective diffusion coefficients exhibit dynamical demixing above a threshold ratio of the diffusion coefficients. Here, we show that this threshold may be reduced drastically in the presence of external fields. We investigate the demixing as a function of the ratio of the diffusion coefficients and discuss the implications of the results for active systems.

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Sunita Kumari, Andre S. Nunes, Nuno A. M. Araujo, Margarida Telo da Gama. 2017-06-23. Demixing of active particles in the presence of external fields. https://doi.org/10.1063/1.4992797

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