Nano-assembling and optical properties of sub-100 nm raspberry-like nanoparticlesChouaib Daoudi, Mahmoud Ould Metidji, Mohamed Remram, Anne-Marie Jurdyc, Matteo Martini, Hélène Gehan and Dominique VouagnerEur. Phys. J. Appl. Phys., 82 2 (2018) 20401DOI: https://doi.org/10.1051/epjap/2018180065