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3D Helix Engineering in Chiral Photonic Materials
Author(s) -
Kragt Augustinus J. J.,
Hoekstra Davey C.,
Stallinga Sjoerd,
Broer Dirk J.,
Schenning Albertus P. H. J.
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201903120
Subject(s) - materials science , photonics , photonic crystal , circular polarization , liquid crystal , photonic metamaterial , optoelectronics , polarization (electrochemistry) , polymer , optics , 3d printed , structural coloration , nanotechnology , composite material , chemistry , physics , microstrip , medicine , biomedical engineering
Engineering the helical structure of chiral photonic materials in three dimensions remains a challenge. 3D helix engineered photonic materials are fabricated by local stratification in a photopolymerizable chiral nematic liquid crystal. The obtained chiral photonic materials reflect both handedness of circular polarized light and show super‐reflectivity. Simulations match the experimentally observed photonic properties and reveal a distorted helical structure. 3D engineered polymer films can be made that reflect both left‐ and right handed circular and linear polarized light dependent and exhibit a changing color contrast upon altering the polarization of incident light. Hence, these 3D engineered photonic materials are of interest for new and emerging applications ranging from anti‐counterfeit labels and data encryption to aesthetics and super‐reflective films.