Fig. 1 b depicts the SEM image of the coated product, indicating that dense wire-like nanostructures were observed. Statistical analysis of many SEM images indicated that the average diameter of the produced 1D structures was in the range of 50-110nm. The inset of Fig. 1 b shows a typical closer-view SEM image of MZO-coated ZnO nanowires. It is noteworthy that the surface of the MgO-coated nanowi