1. Key Laboratory of Advanced Transducers and Intelligent Control System, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, China
2. College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
3. College of Physics, Taiyuan University of Technology, Taiyuan 030024, China
4. Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, China