Fig. 8. Top panel illustrates the nucleation and growth of AuNSs. (a) Analysis of an HRTEM image of nucleates from panel (b). The scale bar is 2 nm. (b)–(g) TEM images of nanocrystals obtained at reaction times of (b and c) 2 min, (d) 10 min, (e) 20 min, (f) 30 min, and (g) 40 min after injection of the Au precursor. Reprinted from ref. 99 with permission from The Royal Society of Chemistry.