Figure 3From: Synthesis and field emission studies of tower-like GaN nanowiresFormation schematic diagram of the tower-like GaN nanowires. (a) Au film transforms into Au islands. (b) The nanowire grows out. (c) The tower-like GaN nanowire forms. (d) The GaN nanowire grows longer with features of tail-tapered and tower-like in base part.Back to article page