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arXiv · 1308.5831

Phase Behavior of Active Swimmers in Depletants: Molecular Dynamics and Integral Equation Theory

Subir K. Das·Sergei Egorov·Benjamin Trefz·Peter Virnau·Kurt Binder
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Abstract

We study the structure and phase behavior of a binary mixture where one of the components is self-propelling in nature. The inter-particle interactions in the system were taken from the Asakura-Oosawa model, for colloid-polymer mixtures, for which the phase diagram is known. In the current model version the colloid particles were made active using the Vicsek model for self-propelling particles. The resultant active system was studied by molecular dynamics methods and integral equation theory. Both methods produce results consistent with each other and demonstrate that the Vicsek model based activity facilitates phase separation, thus broadening the coexistence region.

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Subir K. Das, Sergei Egorov, Benjamin Trefz, Peter Virnau, Kurt Binder. 2014-05-15. Phase Behavior of Active Swimmers in Depletants: Molecular Dynamics and Integral Equation Theory. https://doi.org/10.1103/physrevlett.112.198301

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