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Highly Tunable Polarized Chromatic Plasmonic Films Based on Subwavelength Grating Templates
Author(s) -
Zheng Jun,
Ye ZhiCheng,
Wang ChengLiang,
Fu YiFei,
Huang XinRan,
Sheng ZhengMing
Publication year - 2019
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201800661
Subject(s) - plasmon , materials science , optoelectronics , grating , chromatic scale , optics , polarization (electrochemistry) , holography , dielectric , transmission (telecommunications) , physics , telecommunications , computer science , chemistry
A kind of polarized chromatic plasmonic film is proposed based on subwavelength grating structure, which enables “blue transmission” for the transverse electric light and “red transmission” for the transverse magnetic light. Metal–insulator–metal plasmonic waveguiding and metallic nanowire scattering are revealed to be responsible for the chromatic shift. Based upon the unique transmission spectrum characteristics of such films, polarized chromatic plasmonic tags (PCPTs) can be flexibly fabricated by patterning dielectric grating templates with designed figures and depositing appropriate thickness of metal. These PCPTs, simultaneously possessing directly visible unpolarized transmission colors and concealed distinct polarization‐dependent color shift, can be widely used as anti‐counterfeiting tags with higher security than the diffractive types of holograms.