1. Department of Materials Physics and Chemistry
2. School of Materials Science and Engineering
3. University of Science and Technology Beijing
4. Beijing 100083
5. P. R. China
6. Department of Materials Science and Engineering
7. College of Engineering
8. Peking University
9. Beijing 100871
10. Key Laboratory of Polymer Chemistry and Physics of Ministry of Education
11. Beijing National Laboratory for Molecular Sciences
12. Chemical Physics Interdisciplinary Program
13. Liquid Crystal Insititute
14. Kent State University
15. Kent
16. USA