My research interests include: Protected metallic clusters in molecular forms; molecular metallurgy; Gas-phase metallic and ionic clusters in the gas phase; high-mass spectrometry; Identification and isolation of selected giant cluster compounds; Optical vibronic spectroscopy of large molecules, clusters, and cluster-complexes; Structure, bonding, and surface chemistry of protected metallic clusters; Solid-state chemistry & physics of molecular crystals formed from metallic clusters.