Fig. 1. (a–c) Schematic illustrations, (d–f) low magnification and (g–i) high magnification ADF-STEM images, (j–l) EDS elemental maps and (m–o) EDS spectra of (a, d, g, j, and m) ZnO nanowires, (b, e, h, k, and n) (Cu, Zn)O nanowires and (c, f, i, l, and o) ZnO/CuO nanowires, respectively. The insets of (g–i) show FFT patterns. The employed CuO shell thickness is ca. 10 nm.
