title: Free-standing THz electromagnetic metamaterials.
abstract: Using micromanufactured S-shaped gold strings suspended in free space by means of window-frames, we experimentally demonstrate an electromagnetic meta-material (EM(3)) in which the metallic structures are no longer embedded in matrices or deposited on substrates such that the response is solely determined by the geometrical parameters and the properties of the metal. Two carefully aligned and assembled window-frames form a bi-layer chip that exhibits 2D left-handed pass-bands corresponding to two different magnetic resonant loops in the range of 1.4 to 2.2 THz as characterized by Fourier transform interferometry and numerical simulation. Chips have a comparably large useful area of 56 mm(2). Our results are a step towards providing EM(3) that fulfill the common notions of a material.
authors.affiliation: Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore. moser@nus.edu.sg
authors.forename: H O
authors.initials: HO
authors.lastname: Moser
authors.forename: J A
authors.initials: JA
authors.lastname: Kong
authors.forename: L K
authors.initials: LK
authors.lastname: Jian
authors.forename: H S
authors.initials: HS
authors.lastname: Chen
authors.forename: G
authors.initials: G
authors.lastname: Liu
authors.forename: M
authors.initials: M
authors.lastname: Bahou
authors.forename: S M P
authors.initials: SM
authors.lastname: Kalaiselvi
authors.forename: S M
authors.initials: SM
authors.lastname: Maniam
authors.forename: X X
authors.initials: XX
authors.lastname: Cheng
authors.forename: B I
authors.initials: BI
authors.lastname: Wu
authors.forename: P D
authors.initials: PD
authors.lastname: Gu
authors.forename: A
authors.initials: A
authors.lastname: Chen
authors.forename: S P
authors.initials: SP
authors.lastname: Heussler
authors.forename: Shahrain
authors.initials: S
authors.lastname: bin Mahmood
authors.forename: L
authors.initials: L
authors.lastname: Wen
mesh_terms: D004574:Electromagnetic Fields; D006046:Gold / Q000737:chemistry*; D007259:Infrared Rays; D008420:Manufactured Materials; D008422:Materials Testing; D008872:Microwaves
chemical_list: D006046:Gold