Figure 1.

Various gold nanoparticles developed in the past two decades. (a) Small nanospheres, (b) large nanospheres, (c) nanorods, (d) sharpened nanorods, (e) nanoshells, (f) nanocages/frames, (g) hollow nanospheres, (h) tetrahedra/octahedra/cubes/icosahedra, (i) rhombic dodecahedra, (j) octahedra, (k) concave nanocubes, (l) tetrahexahedra, (m) rhombic dodecahedra, (n) obtuse triangular bipyramids, (o) trisoctahedra, and (p) nanoprisms. Reproduced from ref. ¹⁷⁷ with permission from the Royal Society of Chemistry, copyright [2020].