Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2010-10-22
J. Chem. Phys. 134, 104905 (2011)
Physics
Condensed Matter
Soft Condensed Matter
13 pages, 10 figures
Scientific paper
10.1063/1.3557059
In patchy particle systems where there is competition between the self-assembly of finite clusters and liquid-vapour phase separation, reentrant phase behaviour is observed, with the system passing from a monomeric vapour phase to a region of liquid-vapour phase coexistence and then to a vapour phase of clusters as the temperature is decreased at constant density. Here, we present a classical statistical mechanical approach to the determination of the complete phase diagram of such a system. We model the system as a van der Waals fluid, but one where the monomers can assemble into monodisperse clusters that have no attractive interactions with any of the other species. The resulting phase diagrams show a clear region of reentrance. However, for the most physically reasonable parameter values of the model, this behaviour is restricted to a certain range of density, with phase separation still persisting at high densities.
Carrete Jesús
Doye Jonathan P. K.
Louis Ard A.
Reinhardt Aleks
Varela Luis M.
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