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We report non-polarizing subtractive structural color filters based on surface plasmon-induced suppressed transmission via two-dimensional array of aluminum nano-patches over a glass substrate. Three subtractive primary colors i.e. cyan, magenta and yellow are demonstrated with high transmission efficiencies reaching 75 %.
Electrically controlled transmissive color switches enabling high brightness were demonstrated, by tapping into a polarization-selective nanostructured spectral filter, which is stacked on a liquid crystal-based polarization switch. The spectral filters, based on one-dimensional subwavelength metallic gratings, function as a polarizer and color filter simultaneously. Three independently fabricated...
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