3D ZnO/Ag Surface-Enhanced Raman Scattering on Disposable and Flexible Cardboard Platforms - Pimentel, Ana; Araújo, Andreia; Coelho, Beatriz J.; Nunes, Daniela; Oliveira, Maria J.; Mendes, Manuel J.; Águas, Hugo; Martins, Rodrigo; Fortunato, Elvira (Materials, 2017)