Figure 2. Structural diversity in 3D BNSLs self-assembled from 3.8 nm (3.0 k) Au and 13.4 nm (5.3 k) Fe₃O₄ NCs.

(a) Low-magnification TEM image and (b) corresponding SAED pattern, (d) high-magnification TEM image and (e) HAADF-STEM image of NaZn₁₃-type BNSLs. (c) Structural model of the [001] projection of NaZn₁₃-type BNSLs. (f) Low-magnification TEM image, (i) high-magnification TEM image and (g) SEM image of bcc-AB₆-type (isostructural with the C₆₀K₆ phase) BNSLs. (h,j) Structural models of the [001] projection (j) and the (001) surface (h) of bcc-AB₆-type BNSLs. (k,n,q) Low-magnification TEM images, (l,o,r) high-magnification TEM images and (m,p,s) structural models of AuCu₃-type (k–m), AlB₂-type (n–p) and NaCl-type (q–s) BNSLs. Scale bars, (a) 100 nm; (d) 20 nm; (e) 20 nm; (f) 100 nm; (g) 20 nm; (i) 20 nm; (k) 100 nm; (l) 20 nm; (n) 50 nm; (o) 20 nm; (q) 100 nm; (r) 20 nm.