Fig. 5
TEM images of four different types of Au/CdSe hybrid nanoparticles. a Janus nanospheres. b Heterodimers. c Symmetric double-headed nanoparticles. d Multi-headed nanoparticles. The hybrids are synthesized through manipulating the pH value of Ag deposition (2.5, 4.5, 7.2, 8.1, respectively) with the same amount of Cd(NO3)2 (0.05 mL and 0.1 M). The scale bars in the insets are 5 nm