Figure 5
From: Fabrication of complete titania nanoporous structures via electrochemical anodization of Ti
FESEM images of TiO 2 nanotubes fabricated in glycerol 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) top surface view of patterned Ti-substrate anodized for 10 min, (d) cross-sectional view at low magnification, (e) cross-sectional view of the marked area at high magnification.