1. College of Physics and Electrical Information Engineering, Zhejiang Normal University, Jinhua, China
2. Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Selangor, Malaysia
3. Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), Selangor, Malaysia
4. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China