1. Nanologica AB; 151 36 Södertälje Sweden
2. Laboratory of Photochemistry, Department of Drug Sciences; University of Catania; 95125 Catania Italy
3. Biofilms-Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health & Sciences; Malmo University; Sweden
4. Surface and Corrosion Science; KTH Royal Institute of Technology; 100 44 Stockholm Sweden
5. Department of Biomedical and Biotechnological Sciences; University of Catania; 95125 Catania Italy
6. STMicroelectronics; Stradale Primosole 50 95121 Catania Italy