The solid-liquid work of adhesion (W SL ) defines the reversible work required per unit area to separate the interface between a solid and a liquid phase to an infinite distance. It indicates the relative strengths of adhesive and cohesive forces at the interface. Positive W SL denotes strong adhesion, leading to wetting, while negative W SL signifies poor wetting with dominant cohesive forces. Zero W SL indicates equilibrium between adhesive and cohesive forces, resulting in minimal interaction. W SL is given by the Young-Dupré equation: