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Light‐Driven Plasmonic Color Filters by Overlaying Photoresponsive Liquid Crystals on Gold Annular Aperture Arrays
Author(s) -
Liu Yan Jun,
Si Guang Yuan,
Leong Eunice S. P.,
Xiang Ning,
Danner Aaron J.,
Teng Jing Hua
Publication year - 2012
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.201104440
Subject(s) - materials science , plasmon , color filter array , liquid crystal , optics , optoelectronics , aperture (computer memory) , structural coloration , nanotechnology , color gel , photonic crystal , layer (electronics) , physics , acoustics , thin film transistor
Light‐driven plasmonic color filters are demonstrated by integrating gold annular aperture arrays with photoresponsive liquid crystals (LCs). Upon photoirradiation, a nematic−isotropic phase transition of the LCs arises from the trans – cis photoisomerization of photochromic LCs. As a consequence, the effective refractive index experienced by the impinging light changes, modulating the transmission intensity.