title: Spectral control in anisotropic resonance-domain metamaterials.
abstract: We introduce a concept to control the spectral and dichroic properties of metamaterials. The approach is based on anisotropic metal nanoparticles and on varying their mutual orientation in a periodic lattice. Even seemingly inconsequential changes in particle ordering strongly modify the dichroic properties of the arrays and result in either very narrow resonances or ultrabroad extinction ranges. The results arise from long-range diffractive coupling between the particles, as determined by the dependence of the array unit cell size on particle ordering.
authors.affiliation: Department of Physics, Tampere University of Technology, P.O. Box 692, FI-33101 Tampere, Finland. hannu.husu@tut.fi
authors.forename: Hannu
authors.initials: H
authors.lastname: Husu
authors.forename: Jouni
authors.initials: J
authors.lastname: Mäkitalo
authors.forename: Roope
authors.initials: R
authors.lastname: Siikanen
authors.forename: Goëry
authors.initials: G
authors.lastname: Genty
authors.forename: Henna
authors.initials: H
authors.lastname: Pietarinen
authors.forename: Joonas
authors.initials: J
authors.lastname: Lehtolahti
authors.forename: Janne
authors.initials: J
authors.lastname: Laukkanen
authors.forename: Markku
authors.initials: M
authors.lastname: Kuittinen
authors.forename: Martti
authors.initials: M
authors.lastname: Kauranen