Fehmi Najar, is a Professor of Mechanical Engineering at the Tunisia Polytechnic School, University of Carthage, Tunisia. He received an Engineering Diploma in Mechanical Engineering from the National Engineering School of Tunis in 1997, and an M.S. in Structural Dynamics from the Ecole Centrale de Paris, France, in 1998. After graduation, he worked as Technical Manager in the Graphic Art industry for 6 years. He obtained his PhD in Mechanical Engineering from the National Engineering School of Tunis in 2008. His research interests include MEMS and NEMS, structural dynamics, smart materials, energy harvesting and multi-body dynamics.