Estudio de un fluido confinado entre dos paredes rígidas con una aproximación de multicapas

G. J. ZARRAGOICOECHEA, A. G. MEYRA, Y V. A. KUZ

Bariloche

Taller; 6º Taller Regional de Física Estadística y sus Aplicaciones a la Materia Condensada TREFEMAC'08,; 2008

TREFEMAC Bariloche

Multilayer approximation for a confined fluid in a slit pore Abstract A simple Lennard-Jones fluid confined in a slit nanopore with hard walls is studied on the basis of a multilayer structured model. Each layer is homogeneous and parallel to the walls of the pore. The free energy of this system is constructed following van der Waals-like approximations, with the advantage that the model geometry permits to obtain analytical expressions for the involved integrals. Being the multilayer in thermodynamic equilibrium, a system of non linear equations is obtained for the densities and widths of the layers. Numerical solution of the equations gives the density profile and the longitudinal pressures. The results are compared with Monte Carlo simulations.