Journal
NANO LETTERS
Volume 10, Issue 4, Pages 1103-1107Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl902621d
Keywords
Metamaterials; plasmonic sensing; optical properties
Categories
Funding
- Deutsche Forschungsgemeinschaft [SPP1391, FOR557]
- Landesstiftung BW
- BMBF [1 3N9155, 1 3N10146]
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We experimentally demonstrate a planar rnetamaterial analogue of electromagnetically induced transparency at optical frequencies. The structure consists of an optically bright dipole antenna and an optically dark quadrupole antenna, which are cut-out structures in a thin gold film. A pronounced coupling-induced reflectance peak is observed within a broad resonance spectrum. A metamaterial sensor based on these coupling effects is experimentally demonstrated and yields a sensitivity of 588 nm/RIU and a figure of merit of 3.8
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