The spontaneous assembly of two different types of nanoparticle into ordered superlattices offers a route to designing materials with precisely controlled properties, but available synthesis strategies have many practical limitations. These authors report a fabrication process which overcomes these limitations. They generate large-scale (square-millimetre) binary superlattice structures at a liquid–air interface, allowing the material to be free standing or transferred to any substrate ready for fabrication into useful devices.
- Angang Dong
- Jun Chen
- Christopher B. Murray