1. Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing, School of Mechanical Engineering and Automation, and the Institute of Precision Instrument and Intelligent Measurement and Control, Fuzhou University, Fuzhou, China
2. CAS Key Laboratory of Design and Assembly of Functional Nanostructures and the Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
3. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, China
4. Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.