title: Negative-index bianisotropic photonic metamaterial fabricated by direct laser writing and silver shadow evaporation.
abstract: We present the blueprint for a novel negative-index metamaterial. This structure is fabricated via three-dimensional two-photon direct laser writing and silver shadow evaporation. The comparison of measured linear optical spectra with theory shows good agreement and reveals a negative real part of the refractive index at around 3.85 microm wavelength -- despite the fact that the metamaterial structure is bianisotropic owing to the lack of inversion symmetry along its surface normal.
authors.affiliation: Institut für Angewandte Physik and DFG-Center for Functional Nanostructures (CFN), Universität Karlsruhe (TH), Karlsruhe, Germany. michael.rill@physik.uni-karlsruhe.de
authors.forename: Michael S
authors.initials: MS
authors.lastname: Rill
authors.forename: Christine E
authors.initials: CE
authors.lastname: Kriegler
authors.forename: Michael
authors.initials: M
authors.lastname: Thiel
authors.forename: Georg
authors.initials: G
authors.lastname: von Freymann
authors.forename: Stefan
authors.initials: S
authors.lastname: Linden
authors.forename: Martin
authors.initials: M
authors.lastname: Wegener