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Opt Express. 2010 Jun 7;18(12):12348-53. doi: 10.1364/OE.18.012348.

Intra-connected three-dimensionally isotropic bulk negative index photonic metamaterial.

Author information

  • 1Ames National Laboratory, USDOE and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA. dguney@ameslab.gov

Abstract

Isotropic negative index metamaterials (NIMs) are highly desired, particularly for the realization of ultra-high resolution lenses. However, existing isotropic NIMs function only two-dimensionally and cannot be miniaturized beyond microwaves. Direct laser writing processes can be a paradigm shift toward the fabrication of three-dimensionally (3D) isotropic bulk optical metamaterials, but only at the expense of an additional design constraint, namely connectivity. Here, we demonstrate with a proof-of-principle design that the requirement connectivity does not preclude fully isotropic left-handed behavior. This is an important step towards the realization of bulk 3D isotropic NIMs at optical wavelengths.

PMID:
20588360
[PubMed]
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