γ_s is measured based on the two-component model developed by Fowkes Equation 2 and Equation 335 The polar protic liquids water formamide and nonpolar aprotic liquid diiodomethane were dropped on the

In simpler terms, γ_"s" is a measurement of the surface energy of a material, and it is obtained by dropping different liquids on the surface and measuring the resulting contact angle. The two-component model developed by Fowkes is used to analyze the data and obtain values for the surface energy components of the material: polar and dispersive. These values are shown in Table S3.