Media 1: Light-opals interaction modeling by direct numerical solution of Maxwell’s equations VaccariAlessandro LesinaAntonino Calà CristoforettiLuca ChiappiniAndrea CremaLuigi CalliariLucia RamunnoLora BeriniPierre FerrariMaurizio 2014 Originally published in Optics Express on 03 November 2014 (oe-22-22-27739)