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Cellulose nanocrystals are isolated from plant cellulose structures, e.g., cotton. In article 1603560, M. H. Godinho and co‐workers describe a tunable photonic material produced from these cellulose nanocrystals iridescent films, which reflects both right‐ and left‐handed circularly polarized light, taking advantage of the gaps existing along the cellulose nanocrystals films that are filled with a...
A new photonic structure is produced from cellulose nanocrystal iridescent films reflecting both right and left circularly polarized light. Micrometer‐scale planar gaps perpendicular to the films' cross‐section between two different left‐handed films' cholesteric domains are impregnated with a nematic liquid crystal. This photonic feature is reversibly tuned by the application of an electric field...
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