A correlation between dielectric permittivity and wettability for low energy surface (Bismuth Zinc Niobate) on fused silica

Theoretical contact angle of Diiodomethane on Bismuth Zinc Niobate thin film on fused silica substrate is calculated and the results are compared with experimental values. The theoretical calculation of contact angle is by the determination of the Hamaker's constant from the dielectric data and applying Lifshitz-van der Waals dispersive interaction and Young-Dupree equation and the experimental value is found using a contact angle goniometer using the sessile drop method. The results from the experiment were seen to be close to that from the theoretical calculation.