1. College of Physics and Electrical Information Engineering, Zhejiang Normal University, Jinhua, Zhejiang, China
2. Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, Selangor, Malaysia
3. Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), Johor Bahru, Johor, Malaysia
4. School of Electrical and Computer Engineering, RMIT University, Melbourne, VIC, Australia
5. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China