2011/03/25 by Sergei V. Zhukovsky, Christian Kremers, Dmitry N. Chigrin · 30 citations
Engineering · Materials Science · Physics and Astronomy · #Asymmetry #Dichroism #Dipole #Metamaterial #Metamaterials and Metasurfaces Applications #Photonic Crystals and Applications #Planar #Plasmon #Plasmonic and Surface Plasmon Research #Rod #Simple (philosophy) #Symmetry (geometry) #physics.optics
paper · pdf · doi:10.1364/ol.36.002278
published in Optics Letters 36(12), 2278 (Optica Publishing Group) · 3 pages
arxiv created 2011/03/25 · openalex publication_date 2011/06/10 · arxiv updated 2012/08/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We theoretically calculate the electromagnetic response of metallic rod dimers for the arbitrary planar arrangement of rods in the dimer. It is shown that dimers without an in-plane symmetry axis exhibit elliptical dichroism and act as "atoms" in planar chiral metamaterials. Because of a very simple geometry of the rod dimer, such planar metamaterials are much easier to fabricate than conventional split-ring or gammadion-type structures and lend themselves to a simple analytical treatment based on a coupled dipole model. Dependencies of the metamaterial's directional asymmetry on the dimer's geometry are established analytically and confirmed in numerical simulations.