Figure 3From: Fabrication of complete titania nanoporous structures via electrochemical anodization of Ti FESEM images of TiO 2 nanotubes fabricated in EG containing 0.5 wt% NH 4 F and 0.2 wt% H 2 O via second-step anodization: (a) top surface view at low magnification, (b) top surface view at high magnification, (c) cross-sectional view.Back to article page