Dynamic wide gamut color generation using highly lossy metal-based metal-dielectric-metal structure

Abstract

Dynamic structural color control across a wide spectral range was experimentally achieved via phase retardation between orthogonal polarization states in a Ni/SiO _2 /Ni-subwavelength grating (SWG) structure. The fabricated Ni/SiO _2 /Ni-SWG structure exhibited spectrally broadened resonant reflection dips due to the optical damping of Ni. The resonances induced a large phase retardation between the p- and s-polarizations over a wide spectral range, and the retardation changed the reflected polarization states depending on the wavelength. The rotation of the analyzing polarizer enabled the dynamic variation of the reflected structural color from the sample across the wide visible color gamut.

Keywords

• dynamic structural color
• lossy metal
• metal-insulator-metal
• polarization-tunable
• localized surface plasmon resonance