1. Institute for Nanoscience and Nanotechnology
2. Sharif University of Technology
3. Tehran 14588-8969
4. Iran
5. NUS Centre for Nanofibers and Nanotechnology
6. Sharif Energy Research Institute (SERI)
7. Tehran 1459777611
8. Department of Physics
9. Department of Chemistry
10. Tehran 11555-9516
11. National University of Singapore
12. Singapore 117583
13. Singapore