1. Department of Electrical Engineering and Information Systems
2. The University of Tokyo
3. Tokyo 113-8656
4. Japan
5. Innovative Center for Flexible Devices
6. School of Materials Science and Engineering
7. Nanyang Technological University
8. Singapore 639798
9. Singapore
10. Department of Chemical Engineering
11. Stanford University
12. Stanford
13. USA
14. Center for Emergent Matter Science (CEMS)