Figure 3
HRTEM images of the silver nanoparticles. (a) One nanoparticle containing only one nanocrystal encapsulated in a noncrystalline surface layer after annealing at 300°C. (b) One nanoparticle containing multiple nanocrystals with different orientations after annealing at 600°C. (c) Two nanocrystals with the same orientation coalesced together to form one peanut-type nanoparticle after annealing at 700°C. The dashed lines represent the radii of the nanocrystals and the solid line connects the centers of two nanocrystals. |