1. School of Materials Science and Engineering
2. Harbin Institute of Technology
3. Harbin 150001
4. China
5. Center for Advanced Low-Dimension Materials
6. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
7. College of Materials Science and Engineering
8. Donghua University
9. Shanghai 201620
10. Department of Physics
11. The Chinese University of Hong Kong
12. Hong Kong
13. Zhengzhou University
14. Zhengzhou 450001