Fig. 1. Schematic diagram of the structure of the proposed metasurface unit

Fig. 2. Reflectance at different heights and radii. (a) Different heights; (b) different radii

Fig. 3. Reflection and absorption spectra of metasurface structures

Fig. 4. Absorption structure mode and absorption, reflection and transmission spectra for different conditions. (a) Absorption structure mode for different cases; (b)‒(d) absorption, reflection and transmission spectra for different conditions

Fig. 5. Electric field distribution and magnetic field distribution at 218 nm. (a) Electric field distribution; (b) magnetic field distribution

Fig. 6. Comparison of the absorption rates of 15 nm and 300 nm gallium oxide with the structure proposed by the in the sun-blind band

Fig. 7. Reflection rate of metasurface structures at different angles. (a) Different polarization angles; (b) different incident angles

Fig. 8. Absorption and reflection spectra visible light bands