title: Experimental observation of left-handed behavior in an array of standard dielectric resonators.
abstract: We demonstrate that by utilizing displacement currents in simple dielectric resonators instead of conduction currents in metallic split-ring resonators and by additionally exciting the proper modes, left-handed properties can be observed in an array of high dielectric resonators. Theoretical analysis and experimental measurements show that the modes, as well as the subwavelength resonance, play an important role in the origin of the left-handed properties. The proposed implementation of a left-handed metamaterial, based on a purely dielectric configuration, opens the possibility of realizing media at terahertz frequencies since scaling issues and losses, two major drawbacks of metal-based structures, are avoided.
authors.affiliation: Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310027, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Peng
authors.forename: Lixin
authors.initials: L
authors.lastname: Ran
authors.forename: Hongsheng
authors.initials: H
authors.lastname: Chen
authors.forename: Haifei
authors.initials: H
authors.lastname: Zhang
authors.forename: Jin Au
authors.initials: JA
authors.lastname: Kong
authors.forename: Tomasz M
authors.initials: TM
authors.lastname: Grzegorczyk