1. Gebze Technical University; Chemistry Department; 41400 Gebze Kocaeli Turkey
2. Department of Physics; Faculty of Arts and Science; Yıldız Technical University; 34220 Istanbul Turkey
3. Université Claude Bernard Lyon 1; Laboratoire des Multimatériaux et Interfaces (UMR 5615); Campus de La Doua 69622 Villeurbanne Cedex France