1. Department of Electrical Engineering
2. Faculty of Engineering
3. University of Malaya
4. Kuala Lumpur 50603
5. Malaysia
6. Institut Lumière Matière
7. UMR5306 Université Claude Bernard Lyon 1-CNRS
8. Université de Lyon
9. 69622 Villeurbanne cedex
10. France
11. Materials Science
12. Tokyo 100-0013
13. Japan
14. Department of Chemistry
15. Faculty of Science