1. Preparation Methods for Nanoparticles and Cluster-Matter by “Physical” Means (U. Kreibig, Aachen) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1. Nanoparticles and Cluster Matter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2. Cluster-Matter Characterization and Properties . . . . . . . . . . . . . . . . . . . . 4 1.3. Particle Stability ...