1. Electronic Materials Research Laboratory; Key Laboratory of the Ministry of Education & International Center for Dielectric Research; Xi'an Jiaotong University; Xi'an 710049 Shaanxi China
2. Jiangsu Baoli Asphalt Co., LTD; Wuxi 214422 Jiangsu China
3. Xi'an Jiaotong University Suzhou Academy; Suzhou 215123 Jiangsu China