Mu and epsilon near zero metamaterials for perfect coherence and new antenna designs Yang, Jing Jing ; Francescato, Yan ; Maier, Stefan A. ; Mao, Fuchun ; Huang, Ming Abstract Publication: Optics Express Pub Date: April 2014 DOI: 10.1364/OE.22.009107 Bibcode: 2014OExpr..22.9107Y