1. Department of Materials Science & Nanotechnology Engineering, TOBB University of Economics and Technology, Ankara, Turkey
2. Bionanodesign Laboratory, Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara, Turkey
3. Department of Electrical and Computer Engineering, University of Washington, 98195 Seattle, WA, USA
4. Department of Electrical Engineering, Kuwait University, P. O. Box 5969, Safat 13060, Kuwait