Fig. 2From: Giant Enhancement of Second-Harmonic Generation in Hybrid Metasurface Coupled MoS2 with Fano-Resonance EffectSCSS of designed structures and their characteristic charge distributions. a SCSS of a wall ring, paired bull-eye rings, and the hybrid metasurface. Insets are the schematics of simulated structures. b SCSS (gray line) of the hybrid metasurface and the near-field enhancement (red line) at the center. The spectrum shows a simultaneous pronounced over-lap with the fundamental and SHG wavelengths, which are marked by red and purple stripes. The inset shows a unit of the hybrid metasurface. c–f Charge distributions at featured peaks of 1′–4′Back to article page