Rainbow Photonic Crystals This illustration depicts a bio-based brush block copolymer incorporating oligosaccharide units that self-assemble into a layered architecture. Incoming natural white light interacts with the periodic structure and is reflected as a spectrum of colors, illustrated by the rainbow, highlighting the material's capability to manipulate light through its precisely engineered nanoscale morphology. More details can be found in Research Article by Redouane Borsali and co-workers (DOI: 10.1002/adma.202514152).
Li et al. (Sun,) studied this question.