“…Whereas nanoparticles in oversaturated solutions are heterogeneous in terms of structure and their size and shape can vary over wide ranges, there are methods of preparing well-characterized monodisperse actinde nanoparticles and nanoclusters. For examples, to prepare uranium nanoparticles, there are hydrothermal methods, , procedures using porous templates, radiolysis methods with pH control of nanoparticle size and shape, and laser photolysis methods . Starting from soluble species, procedures to generate less soluble species such as electrochemical methods , can also be used.…”