Fig. 7
From: Plasmonic- and dielectric-based structural coloring: from fundamentals to practical applications
a Cell of tunable color filter with LC polarization rotator. b Color gamut of proposed dichroic resonator in CIE 1964 color coordinates. Red, blue, black lines represent the BG, GR, and BR sample respectively [127]. c Schematic of designed LC-plasmonic system. d Afghan Girl image as function of applied electric field. (SEM images below show pixels of imprinted plasmonic surface [128]). e Overall design of proposed LC plasmonic system. f (Left top) Image taken by a ×10 objective of imprinted plasmonic surface combined with conventional a thin-film-transistor (TFT). (Right top) random image taken by a ×4 objective from integrated device. Scale bars: 0.72 mm. (Bottom) ‘UCF’ patterned device as function of applied voltage, LC alignment and polarizer and analyzer. Scale bars 1.57 mm [129]