His research interests focus on micro- and nano-electronic devices aimed at Integrated Circuit design. Dr. Ionescu has published more than 100 articles in international journals and conferences. He served in the ISQED and IEDM conference technical committees and was the Technical Program Committee Chair of ESSDERC in 2006. He is director of the Electronics Laboratory 2 (LEG-2) of EPFL and was appointed as national academic representative of Switzerland for the European Nanoelectronics Initiative Advisory Council (ENIAC).