1. Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
2. Centre
for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, 117546, Singapore
3. Institute
of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, 138634, Singapore
4. Department
of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117583, Singapore
5. Electronics
and Photonics Department, Institute of High Performance Computing, 1 Fusionopolis Way, 138632, Singapore
6. Department
of Physics, National University of Singapore, 2 Science Drive 3, 117542, Singapore
7. Singapore
Synchrotron Light Source, National University of Singapore, 5 Research
Link, 117603, Singapore