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Graphene pixel-based polarization-insensitive metasurface for almost perfect and wideband terahertz absorption
Absorption of terahertz waves by a metasurface comprising a biperiodic array of pixellated meta-atoms on top of a dielectric substrate backed by a perfect electric conductor was simulated using commercial software, with either all or a few of the pixels in every meta-atom patched with graphene. Absorptances as high as …