Fig. 4
From: Plasmonic- and dielectric-based structural coloring: from fundamentals to practical applications
a Schematic of silver-based grating color filter using plasmonic phase retarder. Four Marilyn Monroe images illustrate effects of increasing the angle of the incident polarization [91]. b Schematic design of a MIM grating coloring device. Incident white light is filtered into resonant wavelengths (colors). Inset: SEM image of a design; scale bar: 1 μm. c (i) SEM image of letter ‘M’ with 220-nm background period and 310-nm period of ‘M’. (ii) Optical micrograph of (i) illuminated using white light [62]