title: Optical magnetic response in three-dimensional metamaterial of upright plasmonic meta-molecules.
abstract: We report the first three-dimensional photonic metamaterial, an array of erected U-shape plasmonic gold meta-molecules, that exhibits a profound response to the magnetic field of light incident normal to the array. The metamaterial was fabricated using a double exposure e-beam lithographic process. It was investigated by optical measurements and finite-element simulations, and showed that the magnetic field solely depends on the plasmonic resonance mode showing either enhanced in the centre of the erected U-shape meta-molecule (16 times enhancement) or enhanced around two prongs of erected U-shape meta-molecule (4 times enhancement).
authors.affiliation: Department of Physics, National Taiwan University, Taipei 10617, Taiwan.
authors.forename: Wei Ting
authors.initials: WT
authors.lastname: Chen
authors.forename: Chen Jung
authors.initials: CJ
authors.lastname: Chen
authors.forename: Pin Chieh
authors.initials: PC
authors.lastname: Wu
authors.forename: Shulin
authors.initials: S
authors.lastname: Sun
authors.forename: Lei
authors.initials: L
authors.lastname: Zhou
authors.forename: Guang-Yu
authors.initials: GY
authors.lastname: Guo
authors.forename: Chinh Ting
authors.initials: CT
authors.lastname: Hsiao
authors.forename: Kuang-Yu
authors.initials: KY
authors.lastname: Yang
authors.forename: Nikolay I
authors.initials: NI
authors.lastname: Zheludev
authors.forename: Din Ping
authors.initials: DP
authors.lastname: Tsai
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D004583:Electrons; D006046:Gold / Q000737:chemistry; D049329:Nanostructures; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D055095:Optics and Photonics / Q000295:instrumentation / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000295:instrumentation / Q000379:methods*
chemical_list: D006046:Gold