1. Department of Sciences, DNRF Centre “Glass and Time,” IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
2. NanoBioMedical Centre, Adam Mickiewicz University, ul. Umultowska 85, 61-614 Poznan, Poland
3. Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland