Tayeb Mohammed-Brahim is currently professor in Rennes 1 University (France), Head of Microelectronics & Microsensors Department of the Institute of Electronics and Telecommunications of Rennes and Director of the Common Center on Microelectronics in the west of France. He got his PhD (Doctorat d'Etat) in Paris-XI University (France) and he founded the thin-film Laboratory in Algiers University (Algeria). Then he moved to Caen University (France) where he created the reliability Laboratory. After that and since 2000, he moved to Rennes 1 University where he became on 2007 the head of Microelectronics Group becoming the Microelectronics and Microsensors Department after 2012. He is mainly involved in the field of thin film and nanowire devices based on amorphous, micro-poly crystalline silicon films or organic films: Photovoltaic cells, Thin Film Transistors for flat panel displays and OLEDs, chemical and mechanical sensors. Presently, his main activities focus on flexible electronics. He is author of more than 300 papers on these different fields.