Journal
OPTICS LETTERS
Volume 40, Issue 21, Pages 4979-4982Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.40.004979
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Funding
- China Scholarship Council (CSC) [201400260166]
- National Key Basic Research Program of China [2012CB825700]
- National Natural Science Foundation of China (NSFC) [51371157, U1432105, U1432110]
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Plasmonic color filters inherently suffer from angular sensitiveness, which hinder them from practical applications. Here, we present a plasmonic subtractive color filter incorporating two-dimensional randomly distributed silver nanodisks on top of a glass substrate. Due to the elimination of structural periodicity, the proposed plasmonic color filter works via localized surface plasmon resonances (LSPRs) and thus enables excellent angle-insensitive (up to 60 degrees) performance. In addition, uncoupled LSPRs between nanodisks guarantee stability and reproducibility of the color filter. Finally, a palette of colors across the visible region was obtained with the proposed color filters by simply varying the diameter of nanodisks, exhibiting a promising and robust applicability in digital imaging and sensing industries. (C) 2015 Optical Society of America
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