Physics – Optics
Scientific paper
2009-12-18
Physics
Optics
17pages 4 figures, submitted to PRB on Nov. 5th 2009
Scientific paper
Chiral structure can be applied to construct metamaterial with negative refractive index (NRI). In an assembly of double-layered metallic U-shaped resonators with two resonant frequencies wH and wL, the effective induced electric and magnetic dipoles, which are contributed by the specific surface current distributions, are collinear at the same frequency. Consequently, for left circularly polarized light, NRI occurs at wH, whereas for right circularly polarized light it occurs at wL. Our design provides a new example to apply chiral structures to tune electromagnetic properties, and could be enlightening in exploring chiral metamaterials.
Bao Yong-Jun
Li Zhi-Feng
Lu Xiang
Ming Nai-Ben
Peng Ru-Wen
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