This conference is the sixth occurrence of a triennial meeting whose scope is to present the main results in nuclear and condensed matter physics obtained at the Sicilian Universities of Palermo, Messina, and Catania. It is appropriate to emphasize that this VI Conference has gone beyond the original aim in terms of topics as well as in international participation. This volume collects papers dealing with topical problems in many areas of interest both from a fundamental and from an applicative point of view. For example, nuclear physics, quantum optics, medical physics, microelectronics, superconductivity, and many other areas are discussed in this volume.