1. Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania
2. National Research Center for Micro and Nanomaterials, University Politehnica of Bucharest, 060042 Bucharest, Romania
3. Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
4. Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
5. Faculty of Medicine, University of Medicine and Pharmacy Carol Davila from Bucharest, 37 Dionisie Lupu Street, District 2, 020021 Bucharest, Romania