1. Department
of Physics, National Technical University of Athens, Zografou Campus, 157 80 Athens, Greece
2. Department
of Chemistry and Technology of Polymers, Cracow University of Technology, ul.Warszawska 24, 31-155 Kraków, Poland
3. Physik-Department,
Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
4. Wroclaw Research
Centre EIT+, ul. Stablowicka 147, 54-066 Wroclaw, Poland