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Article Dans Une Revue Journal of Physics: Condensed Matter Année : 2014

Origami with negative refractive index to generate super-lenses

Résumé

Negative refractive index materials (NRIM) enable unique effects including superlenses with a high degree of sub-wavelength image resolution, a capability that stems from the ability of NRIM to support a host of surface plasmon states. Using a generalized lens theorem and the powerful tools of transformational optics, a variety of focusing configurations involving complementary positive and negative refractive index media can be generated. A paradigm of such complementary media are checkerboards that consist of alternating cells of positive and negative refractive index, and are associated with very singular electromagnetics. We present here a variety of multi-scale checkerboard lenses that we call origami lenses and investigate their electromagnetic properties both theoretically and computationally. Some of these meta-structures in the plane display thin bridges of complementary media, and this highly enhances their plasmonic response. We demonstrate the design of three-dimensional checkerboard meta-structures of complementary media using transformational optics to map the checkerboard onto three-dimensional corner lenses, the only restriction being that the corresponding unfolded structures in the plane are constrained by the four color-map theorem.
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hal-01283602 , version 1 (23-11-2018)

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Fanny Guenneau, Sangeeta Chakrabarti, Sébastien Guenneau, S. Anantha Ramakrishna. Origami with negative refractive index to generate super-lenses. Journal of Physics: Condensed Matter, 2014, 26 (10), pp.405303. ⟨10.1088/0953-8984/26/40/405303⟩. ⟨hal-01283602⟩
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