1. Department of Chemical Engineering
2. Münster University of Applied Sciences
3. 48565 Steinfurt
4. Germany
5. Departamento de Física
6. Universidad de Oviedo
7. E-33007 Oviedo
8. Spain
9. Nanomaterials and Nanotechnology Research Center CINN
10. Private Institute of Theoretical Chemical Physics
11. 6600 Muralto
12. Switzerland