Here the authors present the colloidal synthesis of InAs and GaAs nanocrystals with a cubic morphology through a cation exchange reaction with Cu3As. The chemical bond covalency determines their kinetic-controlled characteristics, influencing their structural ordering. A cellular automaton model captures the cube-to-sphere transition, corresponding to a cubic-to-hexagonal symmetry change.
- Binyu Wu
- Shengsong Yang
- A. Paul Alivisatos