Planar metamaterial analogue of electromagnetically induced transparency for plasmonic sensing.
basic_science · Level V
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- Record sourced from PubMed, PMID 20017551.
- Also identified by DOI 10.1021/nl902621d.
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Abstract
We experimentally demonstrate a planar metamaterial 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.
Medical subject headings
- Electromagnetic Fields
- Nanotechnology
- Optics and Photonics
- Refractometry