Optically Active Metasurface with Non-Chiral Plasmonic Nanoantennas Shaltout, Amr ; Liu, Jingjing ; Shalaev, Vladimir M. ; Kildishev, Alexander V. Abstract Publication: Nano Letters Pub Date: August 2014 DOI: 10.1021/nl501396d Bibcode: 2014NanoL..14.4426S