Extended Data Fig. 6: Surface facets of gold cuboctahedra and examples of patchy cuboctahedra.

a–e, HAADF-STEM images of unmasked gold cuboctahedra and corresponding 3D models. b–e, Zoomed-in views of the particle vertex regions shown by boxes in a. The vertices exhibit {110} terraces as denoted by yellow lines. f,g, Representative TEM images of face-patched (f) and vertex-patched cuboctahedra (g). h,i, Zoomed-in TEM images and corresponding 3D models of face-patched cuboctahedra (h) and vertex-patched cuboctahedra (i) viewed along different orientations. Scale bars, 10 nm (a); 2 nm (b–e); 100 nm (f,g); 20 nm (h,i).