fig3

Figure 3. (A) Schematic illustration of the formation of Au-Ag nanochains by the assembly of hybrid Au-Ag nanoparticles and (B) TEM image of Au-Ag nanochains assembled by core-satellite Au-Ag nanoparticles[80]. (C) Schematic illustration of the synthesis and (D) EDS elemental mapping of Au@Ag@SiO2-AuNP nanoassemblies labeled with 4-MBA[81].