title: Inductive tuning of Fano-resonant metasurfaces using plasmonic response of graphene in the mid-infrared.
abstract: Graphene is widely known for its anomalously strong broadband optical absorptivity of 2.3% that enables seeing its single-atom layer with the naked eye. However, in the mid-infrared part of the spectrum graphene represents a quintessential lossless zero-volume plasmonic material. We experimentally demonstrate that, when integrated with Fano-resonant plasmonic metasurfaces, single-layer graphene (SLG) can be used to tune their mid-infrared optical response. SLG's plasmonic response is shown to induce large blue shifts of the metasurface's resonance without reducing its spectral sharpness. This effect is explained by a generalized perturbation theory of SLG-metamaterial interaction that accounts for two unique properties of the SLG that set it apart from all other plasmonic materials: its anisotropic response and zero volume. These results pave the way to using gated SLG as a platform for dynamical spectral tuning of infrared metamaterials and metasurfaces.
authors: Department of Physics and Center for Nano and Molecular Science and Technology, The University of Texas at Austin, Austin, Texas 78712, United States.
authors: S Hossein
authors: SH
authors: Mousavi
authors: Iskandar
authors: I
authors: Kholmanov
authors: Kamil B
authors: KB
authors: Alici
authors: David
authors: D
authors: Purtseladze
authors: Nihal
authors: N
authors: Arju
authors: Kaya
authors: K
authors: Tatar
authors: David Y
authors: DY
authors: Fozdar
authors: Ji Won
authors: JW
authors: Suk
authors: Yufeng
authors: Y
authors: Hao
authors: Alexander B
authors: AB
authors: Khanikaev
authors: Rodney S
authors: RS
authors: Ruoff
authors: Gennady
authors: G
authors: Shvets