1. Department of Electrical and Computer Engineering National University of Singapore Singapore Singapore
2. Department of Applied Physics The Hong Kong Polytechnic University Hong Kong SAR China
3. Department of Physics National University of Singapore Singapore Singapore
4. Centre for Bioimaging Sciences and Department of Biological Sciences National University of Singapore Singapore Singapore
5. Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore Singapore Singapore
6. Department of Materials Science and Engineering National University of Singapore Singapore Singapore
7. Department of Mechanical Engineering National University of Singapore Singapore Singapore