Since the nanocrystal nucleation is dependent on the original
precursor concentration, this suggests that the main difference
between the structures lies in the growth stage of formation. We
suggest that the difference between formation of the nanoprisms,
nanobarrels, extended nanobarrels, and dodecahedron is the
local precursor concentration on the substrate during the growth
stage. However, determining the exact concentration as the
reaction progresses is non-trivial, due to competing factors of
consumption of the precursor via nanocrystal formation with