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Table 1 Water contact angle of the ZnO films prepared on PAA with different times of two-step anodization duration

From: Preparation and Antibiofilm Properties of Zinc Oxide/Porous Anodic Alumina Composite Films

Time of two-step anodization duration (min) CA of the surface
Before modification (°) After modification (°)
0 75.5 ± 0.3 125.5 ± 0.3
40 29.6 ± 0.3 149.8 ± 0.3
60 45.9 ± 0.3 107.1 ± 0.3
80 61.5 ± 0.3 99.3 ± 0.3