1. Fatih University, Bionanotechnology Research and Development Center (BINATAM); Buyukcekmece 34500 Istanbul Turkey
2. Materials Science and Nanotechnology Department, UNAM-National Nanotechnology Research Center, Bilkent University; 06800 Ankara Turkey
3. The Institute of Materials Science and Nanotechnology, Bilkent University; 06800 Ankara Turkey
4. Department of Physics, Yıldız Technical University; Davutpaşa 34210 Istanbul Turkey