Fig. 6

a Schematic fabrication steps and AFM image of a dielectric nanoresonator [113]. b (i) Schematic design of a structural color filters exploiting amorphous Si:H nanodisks with different diameters D and period P. (ii) Refractive indices of the amorphous Si:H and crystalline Si:H [28]. c Tilted image of a TiO₂-based metasurfaces [125]. d Cross sections of absorption and scattering in case of Au dimer and GaP dimer with disk shape. The disk radii are 50 nm (Au) and 100 nm (GaP) and heights are 37.5 nm (Au) and 75 nm (GaP) [126]