Full color metasurface with high-transmission and omnidirectional characteristics

Nanostructured color filters particularly generated by surface plasmonic resonance of metal-dielectric nanostructures have been intensively studied in the past decades. However, the excitation of high-order scattering of surface plasmons and the intrinsic ohmic loss of metals hinder the generation of high efficiency and high color purity. In this study, we present a full color metasurface based on the concept of surface plasmons to produce the structural colors with high monochromaticity, low-loss, and wide gamut. Owing to the suppression of high-order scattering, the transmission spectra with narrow bandwidth and high efficiency could be formed to exhibit omnidirectional characteristic. Meanwhile, the dual- and multiple-resonance could be switched by changing the polarization angle of incident light. The proposed full color metasurface exhibits the enhancement of transmittance and increment of color monochromaticity. We expect that the proposed full color metasurface is promising for applications in real industries, such as information coding, optical data storage with high density, 2D/3D display, and so on.