title: Stand-up magnetic metamaterials at terahertz frequencies.
abstract: We present a detailed study of non-planar or 'stand-up' split ring resonators operating at terahertz frequencies. Based on a facile multilayer electroplating fabrication, this technique can create large area split ring resonators on both rigid substrates and conformally compliant structures. In agreement with simulation results, the characterization of these metamaterials shows a strong response induced purely by the magnetic field. The retrieved parameters also exhibit negative permeability values over a broad frequency span. The extracted parameters exhibit bianisotropy due to the symmetry breaking of the substrate, and this effect is investigated for both single and broad side coupled split rings. Our 3D metamaterial examples pave the way towards numerous potential applications in the terahertz region of the spectrum.
authors.affiliation: Boston University, Department of Mechanical Engineering, 110 Cummington Street, Boston, Massachusetts 02215, USA.
authors.forename: Kebin
authors.initials: K
authors.lastname: Fan
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Strikwerda
authors.forename: Hu
authors.initials: H
authors.lastname: Tao
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.forename: Richard D
authors.initials: RD
authors.lastname: Averitt
mesh_terms: D004595:Electroplating / Q000379:methods*; D008855:Microscopy, Electron, Scanning; D055616:Microtechnology / Q000379:methods*; D011827:Radiation; D012031:Refractometry / Q000379:methods*; D012825:Silicon / Q000737:chemistry; D055069:Terahertz Imaging / Q000379:methods*; D055053:Terahertz Radiation
chemical_list: D012825:Silicon