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Waveguiding by a locally resonant metasurface

Abstract : Dispersion relations for acoustic and electromagnetic waves guided by resonant inclusions located at the surface of an elastic solid or an interface between two media are analyzed theoretically within the effective medium approximation. Oscillators on the surface of an elastic half-space are shown to give rise to a Love-type surface acoustic wave only existing below the oscillator frequency. A simple dispersion relation governing this system is shown to also hold for electromagnetic waves guided by Lorentz oscillators at an interface between two media with equal dielectric constants. Different kinds of behavior of the dispersion of the resonantly guided mode are identified, depending on whether the bulk wave in the absence of oscillators can propagate along the surface or interface.
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https://hal-univ-lemans.archives-ouvertes.fr/hal-02535960
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Soumis le : mardi 7 avril 2020 - 18:47:22
Dernière modification le : vendredi 30 avril 2021 - 16:02:07

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A. Maznev, Vitali Goussev. Waveguiding by a locally resonant metasurface. Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (11), ⟨10.1103/PhysRevB.92.115422⟩. ⟨hal-02535960⟩

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