Visible light transmission properties of double metal thin gold films with sub-wavelength hole arrays Farzad, Mahmood Hosseini ; Janfada, Mozhdeh ; Hashemi, Mahdieh Abstract Publication: Optik Pub Date: September 2014 DOI: 10.1016/j.ijleo.2014.06.003 Bibcode: 2014Optik.125.5171F