Ulrich Schwarz is full professor at the Institute of Physics at Chemnitz Technical University, Germany, since 2015. His research is in on optoelectronic devices based on group-III-nitrides, in particular the physics and development of light emitting diodes and laser diodes in the violet to green spectral region. This research interest is complemented by sensor science in the context of the degree program on sensor science and cognitive psychology at TU Chemnitz. In 2015 he worked as Senior Development Engineer in Analytics and Metrology at Osram Opto Semiconductors in Regensburg, Germany. From 2009 to 2015 he was professor for Optoelectronics at the Institute for Microsystems Engineering (IMTEK) at Freiburg University in Germany. At the same time he is group leader at the Fraunhofer Institute for Applied Solid State Physics (IAF) in Freiburg. Awarded by the Alexander von Humboldt foundation with a Feodor Lynen scholarship he spent two postdoctorial years (1997–1999) at Cornell University, Ithaca, NY, with research on intrinsically localized modes. In 2001 he was guest researcher in the group of Prof. R. Grober at Yale University, New Haven, CT. In 2006/2007, he worked in the group of Prof. Yoichi Kawakami at Kyoto University, Kyoto, Japan, with an invited fellowship (long-term) awarded by the Japanese Society for the Promotion of Science.