Compared with traditional color dyes, structural color has the advantages of high resolution and good stability, which can achieve full-tone modulation in the visible light range. All-dielectric metasurface structures are proposed to replace plasmonic metasurfaces with higher losses. Due to the existence of high-order dipole resonance mode in the short-wave range, the enhancement of color saturation is limited. The researchers propose a feasible scheme to suppress the high-order dipole mode to solve this problem.
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Source: Phys.org