1. Materials Science and Engineering, Koc University, Istanbul 34450, Turkey
2. Univ Lyon, ECL, INSA Lyon, CNRS, UCBL, CPE Lyon, INL, UMR5270, Ecully 69130, France
3. Biomedical Science and Engineering, Koc University, Istanbul 34450, Turkey
4. Department of Physics, Koc University, Istanbul 34450, Turkey