Photonic crystals with rainbow colors by centrifugation-assisted assembly of colloidal lignin nanoparticles.

ABSTRACT: Photonic crystals are optical materials that are often fabricated by assembly of particles into periodically arranged structures. However, assembly of lignin nanoparticles has been limited due to lacking methods and incomplete understanding of the interparticle forces and packing mechanisms. Here we show a centrifugation-assisted fabrication of photonic crystals with rainbow structural colors emitted from the structure covering the entire visible spectrum. Our results show that centrifugation is crucial for the formation of lignin photonic crystals, because assembly of lignin nanoparticles without centrifugation assistance leads to the formation of stripe patterns rather than photonic crystals. We further prove that the functions of centrifugation are to classify lignin nanoparticles accor

SUBMITTER: Liu J 

PROVIDER: S-EPMC10227086 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature