Free-energy density functional for the inhomogeneous hard-sphere fluid: Application to interfacial adsorption
- 1 September 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 42 (6) , 3382-3387
- https://doi.org/10.1103/physreva.42.3382
Abstract
We propose a simplified version of the free-energy density functional for the inhomogeneous hard-sphere fluid mixture recently derived by Rosenfeld [Phys. Rev. Lett. 63, 980 (1989)]. This new functional, which requires four distinct weight functions, generates a triplet-direct-correlation function for the one-component fluid, which is in good agreement with Monte Carlo simulation results. It also performs well in describing the density profile of the hard-sphere fluid in contact with hard and soft walls. Yet, it is not suitable for studying the freezing transition.Keywords
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