This themed collection is devoted to the latest advances in the field of metal and metal-oxide clusters, down to the subnanometer scale. Further steps in shaping this modern field require a tight collaboration between experimentalists with highly specific technical expertise and theoreticians working on suitable models of both unsupported (in air or solution) and surface-supported metal and metal-oxide clusters. For this reason, we are giving a special emphasis to the interplay between experiment and theory. More generally, this collection brings together theory, fundamental-oriented research in vacuum and superfluid helium droplets, including metal clusters of astrochemical relevance, and the most applied-oriented research of metal and metal oxide clusters in solution, covering subnano- and nano-meter ranges.

Guest Edited by: María Pilar de Lara-Castells (Spanish National Research Council), Cristina Puzzarini (University of Bologna), Stefan Vajda (Czech Academy of Sciences), M. Arturo López-Quintela (University of Santiago de Compostela), Vlasta Bonacic-Koutecky, (Humboldt University of Berlin).