Fig. 1From: Topological control of nitric oxide secretion by tantalum oxide nanodot arraysNanodot arrays were fabricated by anodic aluminum oxide processing on Ta-coated wafer. a Schematic representation of the fabrication of nanodot arrays. b High resolution scanning electron micrographs of nanodot surface: Flat, c 10 nm, d 50 nm, e 100 nm, and f 200 nm. Upper right is an enlarged view and lower right is the appearance view. All scale bars 2.0 µmBack to article page