1. Institute of Materials Science & Nanotechnology; UNAM-National Nanotechnology Research Center; Bilkent University; 06800 Ankara TURKEY
2. Istanbul Sabahattin Zaim University; Food Engineering Department; Halkali St. No: 2 34303 Halkali-Kucukcekmece Istanbul TURKEY
3. Electrical and Computer Engineering; University of Connecticut; Storrs CT 06269-4157 USA