Figure 1From: Synthesis and field emission studies of tower-like GaN nanowiresSEM images of the GaN products with various growth time. (a) 3 min, (b) 10 min, and (c) 40 min, respectively. Inset in FigureĀ 1b shows the magnified SEM image of a typical tower-like GaN nanowire grown for 10 min.Back to article page