1. Energy Research Institute; Nanyang Technological University; Research Techno Plaza X-Frontier Block Level 5 50 Nanyang Drive 637553 Singapore Singapore
2. School of Physical and Mathematical Science; Nanyang Technological University; 21 Nanyang Link 637371 Singapore Singapore
3. Interdisciplinary Graduate School; Nanyang Technological University; 50 Nanyang Avenue 639798 Singapore Singapore
4. School of Materials Science and Engineering; Nanyang Technological University; Nanyang Avenue 639798 Singapore Singapore