title: Polarity-variable birefringence on hyperlens structure.
abstract: A variable birefringence effect has been observed with 1D PMMA surface gratings on a gold film substrate. By changing the operation wavelength on the Au film, the birefringence value Δn(eff) changes from positive to negative. The result verified that this uniaxial crystal-like plasmonic surface gratings showed good superlensing effect at 515 nm when PMMA width:Air width=1:1 where the absolute value of Δn(eff) is relatively large.
authors.affiliation: Department of Photonics, National Sun Yat-sen University, Kaohsiung, Taiwan. yjhung@mail.nsysu.edu.tw
authors.forename: Y J
authors.initials: YJ
authors.lastname: Hung
authors.forename: M H
authors.initials: MH
authors.lastname: Shih
authors.forename: J H
authors.initials: JH
authors.lastname: Liou
authors.forename: J Y
authors.initials: JY
authors.lastname: Tai
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D006046:Gold / Q000737:chemistry*; D007909:Lenses; D008567:Membranes, Artificial; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial; D006046:Gold; D019904:Polymethyl Methacrylate