Studies of drag on the nanocomposite superhydrophobic surfaces

- The nanocomposite thin films of stearic acid (SA)-functionalized ZnO nanoparticles incorporated in epoxy polymer matrix have been achieved.
- SA-functionalization of ZnO nanoparticles in the thin films was confirmed by XRD and FTIR.
- The measured rms roughness of the thin film is found to be 12 ± 1 μm with the adhesion of 5B on glass.
- The wetting property shows that the surface of the film is superhydrophobic with the CA of 156 ± 4° and CAH of 4 ± 2°.
- The drag reduction on the surface of superhydrophobic glass sphere is 16% lower than as-received glass sphere.