Figure 1.
Schematic diagram showing the concept behind the self-assembly process. (a) Patterned panels with binding sites that interact without constraints are unlikely to self-assemble into cubes. (b) Joining panels to form nets limits the possible interactions and allows them to assemble correctly to form a nanocube. (c) Self-assembly is driven by the reflow of tin (Sn) within the hinges of the net; the panel angular orientation needed for self-assembly is derived from the force that is generated when the reflowed hinges minimize their surface area.