1. University of Belgrade, Faculty of Physical Chemistry, Studentski Trg 12-16, 11158 Belgrade, Serbia
2. Department of Physics, Atatürk University, 25240 Erzurum, Turkey
3. Center of Physics and Engineering of Advanced Materials, Laboratory for Physics of Materials and Emerging Technologies, Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
4. Department of Chemical Engineering, Atatürk University, 25240 Erzurum, Turkey