Separation and fractionation of order and disorder in highly polydisperse systems

Details Separation and fractionation of order and disorder in highly polydisperse systems Separation and fractionation of order and disorder in highly polydisperse systems

2009-10-26

arxiv.org/abs/0910.4924v2

Phys. Rev. E 82, 021501 (2010)

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 5 figures

Scientific paper

10.1103/PhysRevE.82.021501

Microcanonical Monte Carlo simulations of a polydisperse soft-spheres model for liquids and colloids have been performed for very large polydispersity, in the region where a phase-separation is known to occur when the system (or part of it) solidifies. By studying samples of different sizes, from N=256 to N=864, we focus on the nature of the two distinct coexisting phases. Measurements of crystalline order in particles of different size reveal that the solid phase segregates between a crystalline solid with cubic symmetry and a disordered phase. This phenomenon is termed fractionation.

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