Affiliation: | a Division of Materials Physics, Ru?er Boškovi? Institute, Bijeni?ka cesta 54, PO Box 180, HR-10002 Zagreb, Croatia b Faculty of Chemical Engineering and Technology, University of Zagreb, Maruli?ev trg 19, HR-10000 Zagreb, Croatia c Department of Physics, Faculty of Science, University of Zagreb, Bijeni?ka cesta 32, PO Box 331, HR-10002 Zagreb, Croatia d CWT Clean Tec AG, Am Bahndamm 12, D-38820 Halberstadt, Germany |