Figure 4: 3D model of a trisoctahedral gold nanocrystal constructed from a single-shot 3D reconstruction.

(a) Iso-surface rendering and 3.3-nm-thick central slice (inset) of the nanocrystal along the twofold rotational symmetry reconstructed from Fig. 2a, of which D1, D2, D3, α, β and γ are six parameters used to characterize the shape, size and facets of the nanocrystal. (b) 3D model of the concave trisoctahedral nanocrystal constructed from a, containing exposed high index {661} facets (see Methods). Scale bar, 30 nm.