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Activity mediated phase separation: Can we understand phase behavior of the nonequilibrium problem from an equilibrium approach?

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dc.contributor.author Trefz, Benjamin
dc.contributor.author Das, Subir Kumar
dc.contributor.author Egorov, Sergei A.
dc.contributor.author Virnau, Peter
dc.contributor.author Binder, Kurt
dc.date.accessioned 2017-01-24T06:44:16Z
dc.date.available 2017-01-24T06:44:16Z
dc.date.issued 2016
dc.identifier.citation Trefz, B.; Das, S. K.; Egorov, S. A.; Virnau, P.; Binder, K., Activity mediated phase separation: Can we understand phase behavior of the nonequilibrium problem from an equilibrium approach? Journal of Chemical Physics 2016, 144 (14), 11 http://dx.doi.org/10.1063/1.4945365 en_US
dc.identifier.citation Journal of Chemical Physics en_US
dc.identifier.citation 144 en_US
dc.identifier.citation 14 en_US
dc.identifier.issn 0021-9606
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2246
dc.description Restricted Access en_US
dc.description.abstract We present results for structure and dynamics of mixtures of active and passive particles, from molecular dynamics (MD) simulations and integral equation theory (IET) calculations, for a physically motivated model. The perfectly passive limit of the model corresponds to the phase-separating Asakura-Oosawa model for colloid-polymer mixtures in which, for the present study, the colloids are made self-propelling by introducing activity in accordance with the well known Vicsek model. Such activity facilitates phase separation further, as confirmed by our MD simulations and IET calculations. Depending upon the composition of active and passive particles, the diffusive motion of the active species can only be realized at large time scales. Despite this, we have been able to construct an equilibrium approach to obtain the structural properties of such inherently out-of-equilibrium systems. In this method, effective inter-particle potentials were constructed via IET by taking structural inputs from the MD simulations of the active system. These potentials in turn were used in passive MD simulations, results from which are observed to be in fair agreement with the original ones. (C) 2016 AIP Publishing LLC. en_US
dc.description.uri 1089-7690 en_US
dc.description.uri http://dx.doi.org/10.1063/1.4945365 en_US
dc.language.iso English en_US
dc.publisher American Institute Physics en_US
dc.rights @American Institute Physics, 2016 en_US
dc.subject Chemistry en_US
dc.subject Physics en_US
dc.subject Low-Reynolds-Number en_US
dc.subject Particles en_US
dc.subject Fluids en_US
dc.subject Macromolecules en_US
dc.subject Suspensions en_US
dc.subject Bacteria en_US
dc.subject Swimmers en_US
dc.subject Crystals en_US
dc.subject Polymers en_US
dc.subject Spheres en_US
dc.title Activity mediated phase separation: Can we understand phase behavior of the nonequilibrium problem from an equilibrium approach? en_US
dc.type Article en_US


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