Optical limiting in multilayer graphene films on a cobalt buffer-layer produced by the sputtering technique - Barreto, Luiz Murilo Marques; Silva, Davinson M. da; Santos, Antonio Domingues dos; Araki, Koiti; Araújo, Cid B. de; Kassab, Luciana Reyes Pires (Applied Optics, 2023)