1. Nanoscience
Center and Department of Biological and Environmental Sciences, University of Jyväskylä, P. O. Box 35, 40014 Jyväskylä, Finland
2. Department
of Theoretical and Computational Biophysics, Max Planck Institute for Biophysical Chemistry, Am Faßberg 11, 37077 Göttingen, Germany
3. Nanoscience
Center and Department of Chemistry, University of Jyväskylä, P. O. Box
35, 40014 Jyväskylä, Finland.