1. Photocatalytic
Synthesis Group, MESA+ Institute for Nanotechnology, Faculty of Science
and Technology, University of Twente, Meander 229, P.O.
Box 217, 7500 AE Enschede, The Netherlands
2. Department
of Tissue Regeneration, MIRA Institute for Biomedical Technology and
Technical Medicine, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands