Absorbing metasurface created by diffractionless disordered arrays of nanoantennas

We study disordered arrays of metal-insulator-metal nanoantenna in order to create a diffractionless metasurface able to absorb light in the 3–5 μm spectral range. This study is conducted with angle-resolved reflectivity measurements obtained with a Fourier transform infrared spectrometer. A first d...

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Veröffentlicht in:Applied physics letters 2015-12, Vol.107 (25)
Hauptverfasser: Chevalier, Paul, Bouchon, Patrick, Jaeck, Julien, Lauwick, Diane, Bardou, Nathalie, Kattnig, Alain, Pardo, Fabrice, Haïdar, Riad
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Sprache:eng
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Zusammenfassung:We study disordered arrays of metal-insulator-metal nanoantenna in order to create a diffractionless metasurface able to absorb light in the 3–5 μm spectral range. This study is conducted with angle-resolved reflectivity measurements obtained with a Fourier transform infrared spectrometer. A first design is based on a perturbation of a periodic arrangement, leading to a significant reduction of the radiative losses. Then, a random assembly of nanoantennas is built following a Poisson-disk distribution of given density, in order to obtain a nearly perfect cluttered assembly with optical properties of a homogeneous material.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4938472