Since almost 25 years I have been working on theoretical studies of electronic and structural properties of atoms, molecules, clusters, colloids, polymers, chain compounds, surfaces, and crystals. I have an interdisciplinary background combining experience in chemistry and physics. My research has resulted in about 150 scientific papers and 2 textbooks.I have a background in technical / applied chemistry but since five years been working on theoretical studies of electronic and structural properties of nanoparticles and chain compounds. Yi Dong and Michael Springborg are married to each other.