When nanocellulose meets diffraction grating: Freestanding photonic paper with programmable optical coupling
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2020-02-01
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Language
en
Pages
9
511-519
511-519
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Materials Horizons, Volume 7, issue 2
Abstract
Photonic crystals based on plasmonic or dielectric periodic structures have attracted considerable interest owing to their capabilities to control light-matter interactions with tailored precision. By using a nanocellulose derived chiral liquid crystal as a building block, here we demonstrate a bio-inspired dual photonic structure that contains the combination of microscopic periodic 1D surface grating and nanoscopic helical organization, giving rise to programmable colour mixing and polarization rotation. We show that a variation in the photonic band-gap in the bulk matrix leads to simultaneous control over the reflection and diffraction of light with controllable iridescence.Description
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Chu, G, Qu, D, Camposeo, A, Pisignano, D & Zussman, E 2020, ' When nanocellulose meets diffraction grating : Freestanding photonic paper with programmable optical coupling ', Materials Horizons, vol. 7, no. 2, pp. 511-519 . https://doi.org/10.1039/c9mh01485c