1. Interdisciplinary Graduate School of Science and Engineering
2. Tokyo Institute of Technology
3. Yokohama 226-8502
4. Japan
5. Institute of Technical Chemistry I
6. Center for Nanointegration Duisburg-Essen (CENIDE)
7. University of Duisburg-Essen
8. 45141 Essen
9. Germany
10. School of Materials and Chemical Technology