1. Department of Electronics and Nanoengineering, Aalto University, Finland
2. Institute of Nanotechnology, Karlsruhe Institute of Technology, Germany
3. Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao, Shandong 266400, People’s Republic of China
4. Faculty of Electrical Engineering and Computing, University of Zagreb, Croatia
5. Danfoss Drives, Finland