期刊
APPLIED PHYSICS LETTERS
卷 103, 期 21, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4829740
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资金
- European Research Council under the ERC [278213]
- European Research Council (ERC) [278213] Funding Source: European Research Council (ERC)
Plasmonic nanohelix arrays are shown to interact with electromagnetic fields in ways not typically seen with ordinary matter. Chiral metamaterials (CMMs) with feature sizes small with respect to the wavelength of visible light are a promising route to experimentally achieve such phenomena as negative refraction without the need for simultaneously negative e and mu. Here we not only show that giant circular dichroism in the visible is achievable with hexagonally arranged plasmonic nanohelix arrays, but that we can precisely tune the optical activity via morphology and lattice spacing. The discrete dipole approximation is implemented to support experimental data. (C) 2013 AIP Publishing LLC.
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