Fabrication of Single‐Nanocrystal Arrays

To realize the full potential of nanocrystals in nanotechnology, it is necessary to integrate single nanocrystals into addressable structures; for example, arrays and periodic lattices. The current methods for achieving this are reviewed. It is shown that a combination of top‐down lithography techniques with directed assembly offers a platform for attaining this goal. The most promising of these directed assembly methods are reviewed: capillary force assembly, electrostatic assembly, optical printing, DNA‐based assembly, and electrophoretic deposition. The last of these appears to offer a generic approach to fabrication of single‐nanocrystal arrays.