Congratulations to Andreas Schiener for his very good PhD examination. Andreas studied the nucleation and growth of CdS-Nanoparticles in aqueous systems with microsecond resolution. For this purpose he developed new experimental methods like a free jet and a hanging drop setup for in-situ SAXS experiments. Although, he spent long times at synchrotron radiation sources around the world, he contributed a lot to the internal life and scientific discussions at the institute and it was a real pleasure to have you here. Andreas we wish you all the best for the future!