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Article

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Published version

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2000

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/13210

Local size segregation in polydisperse hard sphere fluids

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http://dx.doi.org/10.1103/PhysRevLett.84.911

Abstract

The structure of polydisperse hard sphere fluids, in the presence of a wall, is studied by the Rosenfeld density functional theory. Within this approach, the local excess free energy depends on only four combinations of the full set of density fields. The case of continuous polydispersity thereby becomes tractable. We predict, generically, an oscillatory size segregation close to the wall, and connect this, by a perturbation theory for narrow distributions, with the reversible work for changing the size of one particle in a monodisperse reference fluid.

Subject

Reologia, Dinàmica de fluids, Teoria del funcional de densitat

Subject (English)

Rheology, Fluid dynamics, Density functionals

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

PAGONABARRAGA MORA, Ignacio, CATES, Michael E. and ACKLAND, G. Local size segregation in polydisperse hard sphere fluids. Physical Review Letters. 2000. Vol. 84, num. 5, pags. 911-915. ISSN 0031-9007. [consulted: 13 of August of 2026]. Available at: https://hdl.handle.net/2445/13210

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