1. University of BremenFaculty of Production Engineering Badgasteiner Str. 1 28359 Bremen Germany
2. Leibniz Institute for Materials Engineering IWT Badgasteiner Str. 3 28359 Bremen Germany
3. NanoHealth and Optical Imaging GroupKU LeuvenDepartment of Imaging and Pathology Belgium
4. Molecular Small Animal Imaging CenterKU Leuven Herestraat 49 B3000 Leuven Belgium
5. University of IoanninaDepartment of Physics Panepistimioupoli Douroutis 445110 Ioannina Greece
6. Central Laboratory for Crystallography and Applied MaterialsUniversity of Bremen 28359 Bremen Germany