1. Department of Civil & Environmental Engineering; National University of Singapore; Engineering Drive 2 Singapore 117576 Singapore
2. Department of Electrical and Computer Engineering; National University of Singapore; Singapore 119260 Singapore
3. Low Energy Electronic System (LEES); Singapore-MIT Alliance for Research and Technology (SMART); 1 CREATE Way, #09-01/02 CREATE Tower Singapore 138602 Singapore
4. Department of Materials Science and Engineering; National University of Singapore; Singapore 117583 Singapore
5. Department of Chemical and Biomolecular Engineering; National University of Singapore; Singapore 117585 Singapore
6. Institute of Materials Research and Engineering; A*STAR (Agency for Science, Technology and Research); 2 Fusionopolis Way. Innovis, #08-03 Singapore 138634 Singapore