Growth of Vertically Aligned ZnO Nanowire Arrays Using Bilayered Metal Catalysts

Figure 1

SEM images of vertical ZnO NWs grown using 1 nm Ni/5 nm Au (a), 1 nm Cu/5 nm Au (b), and 5 nm pure gold catalyst (c). Sample stage is tilted 45° while imaging.

(a)

(b)

(c)