1. Department of Materials Engineering
2. Ben-Gurion University of the Negev
3. Beer-Sheva 84105, Israel
4. Ilse Katz Institute for Nanoscale Science and Technology
5. Department of ElectroOptics Engineering
6. Racah Institute of Physics and the Harvey M. Kruger Family Center for Nanoscience and Nanotechnology
7. The Hebrew University of Jerusalem
8. Jerusalem 91904, Israel