Complex-Shape Solid-State Photonic Droplets Prepared via Phase Separation and Microfluidics

Cholesteric liquid crystal doped with spiropyran and zinc ions for multi-state anti-counterfeiting

“…Monodisperse droplets of planar-aligned CLC exhibit an intriguing capacity for photonic cross-communication, giving rise to colourful patterns that depend sensitively on the N* pitch, droplet positions and illuminated area. 32,33 It is worth mentioning that the larger microspheres produced by microfluidics have relatively obvious photon cross-communication (Fig. S9, ESI†), while the CLC microspheres produced by magnetic stirring have smaller particle sizes and do not have obvious photon cross-communication.…”