Figure 17From: Wettability Switching Techniques on Superhydrophobic Surfaces(A) Water droplet shapes on as-prepared SnO2 nanorod films (a) before and (b) after UV-irradiation; (B) (a) and (b) are the top and cross-sectional FE-SEM images of the as-prepared SnO2 nanorod films, respectively. Reprinted with permission from [49]. Copyright 2007 Royal Society of ChemistryBack to article page