Fig. 4: False colour hyperspectral images of a sample with known defects.
From: Hyperspectral imaging of microwave metasurfaces with deeply subwavelength resolution
The layered metasurface from Fig. 3, after cleaning, with a region of PVC film and a human hair added between layers and a single lacerated meta-atom, is shown with an 80 x 80 mm FOV in (a). In (b) the image is reacquired with reduced FOV of 25 x 25 mm providing enhanced resolution. \(\bar{\lambda }\) denotes the wavelength at 15 GHz in free space. The monochromatic images for the full dataset of (a) and (b) can be seen in Supplementary Information 1 Fig. S15 and S16 respectively.
