714853.fig.003a
(a)
714853.fig.003b
(b)
Figure 3: (a) AFM image of as prepared CuO nanoparticles (A) 3D, (B) 2D, and (C) line profile of CuO. From (A) and (B), it is confirmed that CuO particles are uniformly distributed on GaAs substrate. In addition, line profile (C) reveals that the size of CuO is around 10 nm. (b) AFM image of as prepared Co3O4 nanoparticles (A) 3D, (B) 2D and (C) line profile of Co3O4 NCs. From (A) and (B), it is confirmed that Co3O4 particles are uniformly distributed on GaAs substrate. In addition, line profile (C) reveals that the size of Co3O4 is around 9 nm.