Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Figure 5

WCA (a) and SA (b) of ZnO-nt/PDMS-coated and UV-cured glass substrates at various pH after 90 days. Error bars are the standard deviation of the contact angles from five repeating tests.

(a)

(b)