Figure 1: SEM images of TiO2 nanotube array films separated from substrates.
From: Anodically Grown Titania Nanotube Induced Cytotoxicity has Genotoxic Origins
(a) Top and (b) lateral views of the nanotubes fabricated using the EG/NH4F electrolyte. (c) and (d) show the images of the corresponding regions in films grown in the water/HF electrolyte.
