On the phase behavior of hard aspherical particles

Details On the phase behavior of hard aspherical particles On the phase behavior of hard aspherical particles

2010-10-06

arxiv.org/abs/1010.1245v2

J. Chem. Phys 133, 234903 (2010)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 3 figures. Published in the Journal of Chemical Physics

Scientific paper

10.1063/1.3518976

We use numerical simulations to understand how random deviations from the ideal spherical shape affect the ability of hard particles to form fcc crystalline structures. Using a system of hard spheres as a reference, we determine the fluid-solid coexistence pressures of both shape-polydisperse and monodisperse systems of aspherical hard particles. We find that when particles are sufficiently isotropic, the coexistence pressure can be predicted from a linear relation involving the product of two simple geometric parameters characterizing the asphericity of the particles. Finally, our results allow us to gain direct insight into the crystallizability limits of these systems by rationalizing empirical data obtained for analogous monodisperse systems.

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