1. Department of Electronic Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, P. R. China
2. Shandong Institute of Advanced Technology, Jinan 250100, Shandong, P. R. China
3. School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, P. R. China
4. Centre for Advanced Laser Manufacturing (CALM), School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
5. College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, P. R. China