Figure 3
From: Single-crystalline aluminum film for ultraviolet plasmonic nanolasers
(a) Schematics of the ZnO nanowires formed on the tops of the single- and polycrystalline Al films with a dielectric spacer layer. (b) Scanning electron microscopy image of a ZnO plasmonic nanolaser. The length and hexagonal side length of the ZnO nanowire are 1 μm and 30 nm, respectively. (c) High-resolution transmission electron microscopy image of a ZnO nanowire taken along the 
direction.
