1. Key Laboratory of Polar Materials and Devices (Ministry of Education)
2. East China Normal University
3. Shanghai 200241
4. China
5. Department of Physics
6. Key Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education)
7. Beihang University
8. Beijing 100191
9. Materials Science and Technology Division
10. Oak Ridge National Laboratory
11. Oak Ridge
12. USA
13. Department of Chemical and Biomedical Engineering
14. FAMU-FSU College of Engineering
15. Tallahassee
16. Department of Chemistry and Biochemistry
17. University of Oklahoma
18. Norman