Research Article

Direct Oxidation Growth of CuO Nanowires from Copper-Containing Substrates

Figure 6

SEM images of the substrates after oxidation: (a) Cu/Cu2O, (b) Cu/CuO, (c) Cu2O thin layer, and (d) CuO thin layer. The insets show the amplified top surface details of the corresponding substrates.
830474.fig.006a
(a)
830474.fig.006b
(b)
830474.fig.006c
(c)
830474.fig.006d
(d)