1. Department of Biomedical Materials, Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany
2. Department of Pharmaceutical Technology, Institute of Pharmacy, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany
3. Interdisciplinary Center of Materials Science, Martin-Luther University Halle-Wittenberg, 06120 Halle, Germany