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Cuesta, J. A. ; Fernández Tejero, Carlos ; Xu, H. ; Baus, Marc | American Physical Society | 1991-10-15Recent attempts to generalize the classical Onsager theory of nematic ordering to finite-density systems of finite-length hard convex bodies are related and compared. It is pointed out that, although good results can be obtained in three-dimensi[...]texto impreso
The high-frequency elastic behavior of fluid surfaces is studied from first principles. The general dispersion equation for elastic surface waves thus obtained reveals the influence of the surface structure on Rayleigh's surface waves. New types[...]texto impreso
A theoretical study of the freezing of adhesive hard spheres within the generalized-effective-liquid approximation has been performed. The liquid-solid phase diagram exhibits most of the trends observed for simple liquids. There is, however, no [...]texto impreso
Linearized hydrodynamic equations for a nonuniform anisotropic fluid are obtained from the exact Mori-Zwanzig equations for the conserved densities. In the particular case of a two-phase system with a planar equilibrium interface, these equation[...]texto impreso
Density-functional theory within the effective-liquid approximation is applied to the problem of the isotropic-nematic transition of D-dimensional hard convex bodies. It is shown that the free-energy functional factorizes into its radial and ang[...]texto impreso
The orientational freezing of a system of hard ellipses, as a first approximation for a nematogen adsorbed on a smooth substrate, is studied with the aid of an approximate density-functional theory used previously for the study of hard ellipsoid[...]texto impreso
We show how a van der Waals theory of simple fluids with an interaction potential whose range has a nonmonotonic density dependence can lead to a liquid-liquid transition in close analogy to recent observations and simulations.texto impreso
The exact evolution equations for the conserved densities of a one-component two-phase fluid are reduced, in each bulk phase to the corresponding linearized hydrodynamic equations and at the interface, to boundary conditions, relating the jump i[...]texto impreso
The structure of the liquid surface is shown to lead to the appearance of new surface waves which are studied both in the high-frequency elastic domain and in the low-frequency hydrodynamic domain. The experimental observation of these surface w[...]texto impreso
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Fernández Tejero, Carlos ; Lutsko, J. F. ; Colot, J. L. ; Baus, Marc | American Physical Society | 1992-09-15The thermodynamic properties of the Yukawa model for colloidal suspensions are determined theoretically from the Rogers-Young integral equation for the fluid phase and from a recently introduced van der Waals-like theory for the solid phases. Ve[...]texto impreso
The dispersion relations for surface waves on a planar liquid surface are obtained from first principles. The high-frequency elastic, low-frequency hydrodynamic and intermediate viscoelastic regimes are investigated separately. It is shown that [...]
