Left-handed band in an electromagnetic metamaterial induced by sub-wavelength multiple scattering

Simon Yves 1 Thomas Berthelot 2, 3 Mathias Fink 1 Geoffroy Lerosey 4, 5 Fabrice Lemoult 1
1 Institut Langevin - Ondes et Images
2 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
3 Kelenn Technology
4 Institut Langevin ondes et images
5 greenerwave
Abstract : Due to the deep sub-wavelength unit cell in metamaterials, the quasi-static approximation is usually employed to describe the propagation. By making pairs of resonators, we highlight that multiple scattering also occurs at this scale and results in the existence of a dipolar resonance, which leads to a negative index of refraction when we consider several resonators. We experimentally verify the possibility of obtaining a negative index of refraction in periodic metamaterials in two different ways, and eventually demonstrates a superlensing effect in both cases
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https://hal-cea.archives-ouvertes.fr/cea-02107417
Contributor : Serge Palacin <>
Submitted on : Tuesday, April 23, 2019 - 4:25:57 PM
Last modification on : Tuesday, November 26, 2019 - 3:22:08 PM

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Simon Yves, Thomas Berthelot, Mathias Fink, Geoffroy Lerosey, Fabrice Lemoult. Left-handed band in an electromagnetic metamaterial induced by sub-wavelength multiple scattering. Applied Physics Letters, American Institute of Physics, 2019, 114 (11), pp.111101. ⟨10.1063/1.5065556⟩. ⟨cea-02107417⟩

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