Versatile architecture of ultra-narrow band absorbing photonic nanostructure Clément Verlhac, Hasnaa El-Ouazzani, Mathilde Makhsiyan, Riad Haidar, Jérôme Primot and Patrick Bouchon EPJ Web Conf., 238 (2020) 05005 Published online: 20 August 2020 DOI: 10.1051/epjconf/202023805005