1. School of Materials Engineering, Purdue University, West Lafayette, Indiana, United
States
2. Institute for Materials
Science
and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
3. Nanoscience Center, Department
of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
4. International Iberian Nanotechnology Laboratory, Avenido Mestre José
Veiga, 4715-330, Braga, Portugal
5. Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109,
United States