1. Department of Electrical and Computer Engineering; National University of Singapore; 4 Engineering Drive 3 Singapore 117583
2. Engineering Science Programme; National University of Singapore; 9 Engineering Drive 1 Singapore 117575
3. Department of Chemistry; National University of Singapore; 3 Science Drive 3 Singapore 117543
4. Institute of Materials Research and Engineering; A*STAR (Agency for Science, Technology and Research); 3 Research Link Singapore 117602