1. Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences (MTA-SzBK), Pf. 521, H-6701 Szeged, Hungary, Institute of Biophysics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria, National Institute for the Physics of Matter (INFM) and Department of Physical and Astronomical Sciences, University of Palermo, Via Archirafi 36, I-90123 Palermo, Italy, Institute for the Study of Nanostructured Materials (ISMN), CNR, Via P. Gobetti 101, I-40129 Bologna, Italy, and Department of...