The overarching theme of Professor Levi's research is the fundamental understanding of microstructure evolution, with emphasis on structural alloys and ceramics, and the application of this understanding to the chemical and microstructural design of coatings, composites and monolithic systems. Much of his current research focuses on materials which would enable more efficient and environmentally cleaner energy and transportation technologies. He also has had a long standing interest on metastable structures evolving from processes characterized by large departures from equilibrium, starting with rapid solidification and currently emphasizing vapor deposition and synthesis of inorganics from precursors. Current areas of research include: