title: Tunable two-dimensional left-handed material consisting of ferrite rods and metallic wires.
abstract: We demonstrate a magnetically tunable and two-dimensional (2D) left-handed material (LHM) consisting of an array of ferrite rods and metallic wires by experiments and simulations. It shows that the ferrite rod has a 2D isotropic negative permeability. By combining the ferrite rods with metallic wires, we observe experimentally a 2D LH passband that can be tuned dynamically, continuously and reversibly by an external magnetic field within in a wide frequency range with a response of 3.5 GHz/kOe. Retrieved effective parameters based on simulated scattering parameters show that operating frequency and value of negative refraction index can be conveniently tuned by changing the external magnetic field.
authors: Department of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China.
authors: Hongjie
authors: H
authors: Zhao
authors: Ji
authors: J
authors: Zhou
authors: Lei
authors: L
authors: Kang
authors: Qian
authors: Q
authors: Zhao
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005290:Ferric Compounds / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D008670:Metals / Q000737:chemistry*; D008962:Models, Theoretical; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation
chemical_list: D005290:Ferric Compounds; D008670:Metals; C001215:ferrite