Figure 4.

(a) Total energy per atom as a function of the nanoparticle size (in terms of number of forming atoms) for cuboctahedrons (full circles) and general truncated octahedrons (open circles). (b) Surface energy of cuboctahedrons calculated by MM and showed as a function of the size of “parent” cube. The dashed lines are the MM values for single-orientated $\left(100\right)$ and $\left(111\right)$ surfaces as listed in Table 1.