1. Deggendorf Institute of Technology, Faculty of Electrical; Media and Computer Engineering; Dieter-Görlitz-Platz 1, 94469 Deggendorf Germany
2. Dalian Nationalities University; School of Physics and Materials Engineering; No. 18, Liaohe West Road, Dalian, Development Zone, Dalian 116600 China
3. Deggendorf Institute of Technology; Faculty of Mechanical Engineering and Mechatronics; Dieter-Görlitz-Platz 1, 94469 Deggendorf Germany
4. Soochow University, Institute of Functional Nano & Soft Materials; 199 Ren-Ai Road, Bld. 909; Office 3215 Suzhou 215123 China