1. Department
of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
2. Centre
for Advanced 2-D Materials (CA2DM), National University of Singapore, 6 Science Drive 2, 117546 Singapore
3. NUS
Graduate School for Integrative Sciences and Engineering, National University of Singapore, Centre for Life Sciences, #05-01, 28
Medical Drive, 117456 Singapore
4. School
of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore