Fig. 4: Experimental results for custom combinations of resonator and lattice symmetries.
From: Chirality encoding in resonant metasurfaces governed by lattice symmetries
a C2v/hexagonal, b C3v/hexagonal, c C3v/rectangular. Top row: SEM images and unit cell schematics of the fabricated chiral gradient metasurfaces. Bottom row: experimentally measured spectral maps of chiral signal from the corresponding gradient metasurface samples.
