Figure 3 : Experiments used to validate non-wetting behavior under water.

From: Sustaining dry surfaces under water

Figure 3

(A) Anodized aluminum substrate coated with PVDF/PMMA and silica nanoparticles (polymer/HFS (NC1)) after 127 days under water. The left image was taken orthogonally to the sample surface; the middle image is a side view that reveals a sheen caused by the thin gas layer between the surface and the water; the right image shows a dry sample upon retrieval from the bath. (B) Process of degassing air from the zinc oxide nanorods sample.