Sébastien holds a Ph.D. in Mechanical Engineering from the University of California at Berkeley and a Management of Technology certificate from Haas Business School. His Ph.D. work included the development of sensors, micro-technology and polymer materials. As part of his work, he designed novel micro-biosensors to detect changes in pH using plastics and polymers, resulting in one US and international patent. In addition to his PhD, Mr. Payen is a Mayfield Fellow 2006. Prior to coming at UC Berkeley, Mr. Payen served one year in the French Navy as a deck officer on a mine-hunter. He also worked as a scientist and process engineer in a small biotechnology start-up in the Bay Area between June 2003 and May 2004. Mr. Payen received his Master of Sciences from the Department of Mechanical Engineering at UC Berkeley in May 2003. In July 2001, prior to coming at UC Berkeley, Mr. Payen graduated from Ecole Polytechnique, one of the top engineering schools in France.