1. IFW Dresden, Institute for Complex Materials, P.O. Box D-01171 Dresden, Germany
2. Technical University (TU) Dresden, Institute of Materials
Science, D-01062 Dresden, Germany
3. Centre
of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze 41-819, Poland
4. IBS Center for
Integrated Nanostructure Physics, Institute for Basic Science (IBS), Daejon 305-701, Republic of Korea
5. Max
Bergmann Center of Biomaterials, TU Dresden, Budapester Strasse 27, D-01069 Dresden, Germany
6. Department
of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, United States
7. Department
of Energy Science, Department of Physics, Sungkyunkwan University, Suwon 440-746, Republic of Korea