title: Electromagnetic concentrators with reduced material parameters based on coordinate transformation.
abstract: Omni-directional electromagnetic field concentrators have been recently reported by Marco Rahm et al. [Photon. Nanostruct.: Fundam. Appl. 6, 87 (2008)] based on form-invariant coordinate transformations related to its Jacobi transformation matrix. Using transverse-electric wave illumination, we reduced the complex material parameters of the concentrator for future practical implementation. Concentrators with different set of permittivity and permeability tensors are proposed. The electromagnetic concentrating performance and the scattering properties at the inner and outer boundary of these concentrators are theoretically and numerically analyzed. Finally we obtain a set of material tensors for a concentrator that simultaneously has perfect matched interior and exterior interfaces.
authors.affiliation: State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Lan
authors.initials: L
authors.lastname: Lin
authors.forename: Junxian
authors.initials: J
authors.lastname: Ma
authors.forename: Changtao
authors.initials: C
authors.lastname: Wang
authors.forename: Jianhua
authors.initials: J
authors.lastname: Cui
authors.forename: Chunlei
authors.initials: C
authors.lastname: Du
authors.forename: Xiangang
authors.initials: X
authors.lastname: Luo
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D055590:Electromagnetic Phenomena / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D012542:Scattering, Radiation; D014159:Transducers