1. NUSNNI‐NanoCoreNational University of Singapore Singapore 117411 Singapore
2. NUS Graduate School for Integrative Sciences and Engineering (NGS)National University of Singapore Singapore 117456 Singapore
3. Centre for Advanced 2D MaterialsNational University of Singapore Singapore 117546 Singapore
4. Department of ChemistryNational University of Singapore Singapore 117543 Singapore
5. Department of Materials Science and EngineeringUniversity of California Berkeley CA 94720 USA
6. Department of PhysicsNational University of Singapore Singapore 117542 Singapore
7. Yale‐NUS College Singapore 138527 Singapore
8. Department of Electrical and Computer EngineeringNational University of Singapore Singapore 117583 Singapore
9. Department of Materials Science and EngineeringNational University of Singapore Singapore 117575 Singapore