fig1

Figure 1. (A) Schematic illustration of the fabrication of an Au-Ag nanorod array^[35]. TEM image with a schematic illustration of the structure of (B) Au-Cu core-shell nanocubes and (C) Au-Cu core-shell octahedra^[74]. (D) Schematic illustration of the synthesis of Au@Cu nanocubes and (E) EDX mapping of Au@Cu core-shell nanocubes^[75].