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Phase behaviour of hard spheres confined between parallel hard plates: manipulation of colloidal crystal structures by confinement.

Fortini, A and Dijkstra, M (2006) Phase behaviour of hard spheres confined between parallel hard plates: manipulation of colloidal crystal structures by confinement. J Phys Condens Matter, 18 (28). L371-L378.

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Abstract

We study the phase behaviour of hard spheres confined between two parallel hard plates using extensive computer simulations. We determine the full equilibrium phase diagram for arbitrary densities and plate separations from one to five hard-sphere diameters using free energy calculations. We find a first-order fluid-solid transition, which corresponds to either capillary freezing or melting depending on the plate separation. The coexisting solid phase consists of crystalline layers with either triangular ([Formula: see text]) or square ([Formula: see text]) symmetry. Increasing the plate separation, we find a sequence of crystal structures from [Formula: see text], where n is the number of crystal layers, in agreement with experiments on colloids. At high densities, the transition between square to triangular phases is interrupted by intermediate structures, e.g., prism, buckled, and rhombic phases.

Item Type: Article
Authors :
NameEmailORCID
Fortini, Aa.fortini@surrey.ac.ukUNSPECIFIED
Dijkstra, MUNSPECIFIEDUNSPECIFIED
Date : 19 July 2006
Identification Number : https://doi.org/10.1088/0953-8984/18/28/L02
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:16
Last Modified : 17 May 2017 15:10
URI: http://epubs.surrey.ac.uk/id/eprint/838594

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