Large-Area Resonance-Tuned Metasurfaces for On-Demand Enhanced Spectroscopy

Figure 3

(a) Top-view SEM images of the SC metasurfaces with diameter of 288 to 190 nm, which are arrayed from left to right, respectively. The white scale bars indicate 1 μm. (b) Schematic 3D-view illustration of a SC metasurface and optical configuration. (c) Measured reflectance spectra of the SC metasurfaces at incident angle θ = 5° and -polarization in the configuration that the plane of incidence was the plane in (b).

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