Fig. 1: The fabricated Si metasurface and its band structure.
From: Broadband infrared imaging governed by guided-mode resonance in dielectric metasurfaces
a Top: The schematic diagram of Si metasurfaces. Bottom: SEM images of fabricated Si metasurface. b Calculated band structures for the Si metasurface with the positions of guided modes M1, M2, M3, and M4 (marked with red circles) and coupling regions (marked with orange circles)
