期刊
OPTICS EXPRESS
卷 18, 期 12, 页码 12348-12353出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.18.012348
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资金
- Department of Energy [DE-AC02-07CH11358]
- European Community [213390]
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. (C) 2010 Optical Society of America
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