1. Collaborative Innovation Center for Nanomaterials & Devices
2. College of Physics
3. Qingdao University
4. Qingdao 266071
5. China
6. Department of Polymer Science and Engineering
7. Shanghai Key Laboratory of Electrical Insulation and Thermal Aging
8. Shanghai Jiao Tong University
9. Shanghai 200240
10. Joint Institute for Computational Sciences
11. University of Tennessee
12. Knoxville
13. USA