Jan Haeberle graduated on January 11, 2019 at the University of Cologne as a PhD in experimental physics. He was working on the properties of tailor-made granular media under the supervision of Prof. Matthias Sperl and Dr. Philip Born. He has acquired and used broad competences from chemistry, experimental physics, and mathematical modeling in his work. The work was part of a project funded by the German Research Foundation (DFG) in cooperation with the TU Dortmund where granular media was considered for applications in lightweight construction.