title: Planar metamaterial analogue of electromagnetically induced transparency for plasmonic sensing.
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.
authors.affiliation: 4 Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany.
authors.forename: Na
authors.initials: N
authors.lastname: Liu
authors.forename: Thomas
authors.initials: T
authors.lastname: Weiss
authors.forename: Martin
authors.initials: M
authors.lastname: Mesch
authors.forename: Lutz
authors.initials: L
authors.lastname: Langguth
authors.forename: Ulrike
authors.initials: U
authors.lastname: Eigenthaler
authors.forename: Michael
authors.initials: M
authors.lastname: Hirscher
authors.forename: Carsten
authors.initials: C
authors.lastname: Sönnichsen
authors.forename: Harald
authors.initials: H
authors.lastname: Giessen
mesh_terms: D004574:Electromagnetic Fields; D004867:Equipment Design; D006046:Gold / Q000737:chemistry; D008567:Membranes, Artificial; D036103:Nanotechnology / Q000295:instrumentation*; D055095:Optics and Photonics; D010316:Particle Size; D012031:Refractometry / Q000295:instrumentation*; D013499:Surface Properties
chemical_list: D008567:Membranes, Artificial; D006046:Gold