Density functional theory 8 Pre-wetting 8 Single Wall Ab initio 4 Adsorbate-substrate 4 Adsorption 4 Alkali metals 4 Asymmetric profile 4 Attractive surfaces 4 Capillary condensation 4 Coexistence curve 4 Critical temperatures 4 Density profile 4 Experimental data 4 External potential 4 Filling 4 First-order phase transitions 4 First-order wetting transitions 4 Fluid atoms 4 Free energy 4 Geometry 4 Grand canonical ensemble 4 Left-right symmetry 4 Liquid-vapor interface 4 Pair potential 4 Phase interfaces 4 Phase transitions 4 Physisorption 4 Planar slit 4 Planar walls 4