1. Department of Electrical and Electronics Engineering, Antalya International University, Antalya 07190, Turkey
2. UNAM, Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
3. Department of Electrical and Computer Engineering, University of Connecticut, Storrs, Connecticut 06269, USA
4. Department of Electrical and Electronics Engineering, Eskisehir Osmangazi University, Eskisehir 26480, Turkey
5. IBM T.J. Watson Research Center, Yorktown Heights, New York 10598, USA