Fig. 3: Mechanical robustness of cellular coatings (coating thickness ~80 μm).
a, b Evolution of water contact angles (a) and roll-off angles (b) of different coatings during Taber abrasion under 1-kg load. For comparative study, cellular coatings in different matrixes (i.e., epoxy, acrylic, polyurethane, and ceramic), shell-alone coating, hybrid seeds-alone coating, nanoseed-alone coating, and Ultra-ever Dry coating were also tested. The inset image in (b) highlights the distinct worn scars on the cellular coating and the other coatings after abrasion. c Comparison of the wear resistance of the cellular coating with that of the existing reports. See Supplementary Fig. 15 for details. d, e Evolution of water contact angles (d) and roll-off angles (e) of different coatings along with the water jet impact time (jet velocity ~40 m s−1, Weber number ~44,444). f Summary of the roll-off angles on the cellular coatings after diverse standard durability tests. The errors represent the standard deviations from at least three independent experiments.
