1. Department of Materials Science and Engineering, Gebze Technical University, 41400 Kocaeli, Turkey
2. Department of Materials Science and Engineering, Izmir Institute of Technology, Gulbahce/Urla, 35430 Izmir, Turkey
3. Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli/Tuzla, 34956 Istanbul, Turkey
4. Sabanci University Nanotechnology Research and Application Center, Orhanli/Tuzla, 34956 Istanbul, Turkey