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We explore the electromagnetic response of ultrathin metasurfaces realized by densely-packed arrays of graphene strips. We analyze various topologies of propagation bands supported by this structure, ranging from the canalization regime found at a few terahertz (THz), hyperbolic responses present at a few dozens of THz, and anisotropic elliptic TE and TM regimes that arise at mid-infrared frequencies...
The properties of surface plasmons supported by infinitesimally thin hyperbolic metasurfaces are investigated in detail. Hyperbolic metasurfaces are rigorously modelled using uniaxial conductivity tensors, thus taking into account their combined dielectric/metallic nature. The dispersion relation of the supported modes is analytically derived and asymptotically simplified to closely follow the branches...
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