Adsorbate-substrate 6 Attractive surfaces 6 Density functional theory 6 Planar walls 6 Wetting 6 Asymmetric profile 4 External potential 4 Filling 4 First-order phase transitions 4 First-order wetting transitions 4 Free energy 4 Geometry 4 Grand canonical ensemble 4 Left-right symmetry 4 Physisorption 4 Pre-wetting 4 Single Wall 4 Symmetry-breaking 4 Wetting temperature 4 Adsorption 2 Cesium 2 Dense layer 2 Density profile 2 Liquid-vapor transitions 2 Simple liquids 2 Sodium 2 Solid surface 2 Structure of simple liquids 2 Triple points 2