Since 1987, he has been a professor of physics at the University of California, San Diego; in addition to this position, he is also Layer Leader-Materials and Devices of CAL-(IT)2 Institute, and director-AFOSR-MURI at UCSD. He held visiting professorships at the Catholic University -Santiago, Chile; Universidad del Valle, Colombia; the Catholic University-Leuven, Belgium, and the Rheinisch-Westfälische Technische Hochschule Aachen, Germany.
Since 1987, he has been a professor of physics at the University of California, San Diego; in addition to this role, he is also Layer Leader-Materials and Devices of CAL-(IT)2 Institute, and director-AFOSR-MURI at UCSD. He held visiting professorships at the Catholic University -Santiago, Chile; Universidad del Valle, Colombia; the Catholic University-Leuven, Belgium, and the Rheinisch-Westfälische Technische Hochschule Aachen, Germany.