Optofluidic assembly of colloidal photonic crystals with controlled sizes, shapes, and structures

Various structural motifs of colloidal crystals are prepared by UV-induced consolidation over fast time scales. Our strategy with a high-throughput optofluidic technique allows unprecedented control over the 3D organization of the colloids, as well as the combination of different materials over multiple length scales, thus expanding the potential for specific applications such as e-papers and light emission modulators.