1. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)
2. Nanjing Tech University (NajingTech)
3. Nanjing 211816
4. P. R. China
5. School of Physical Science and Technology
6. Lanzhou University
7. Lanzhou 730000
8. School of Mechanical and Aerospace Engineering
9. Nanyang Technological University
10. Singapore 639798
11. Singapore
12. Institute of Flexible Electronics (IFE)