1. State Key Laboratory of Electrical Insulation and Power Equipment, Center for Plasma Biomedicine, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
2. Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
3. Frank Reidy Center for Bioelectrics, Old Dominion University, Norfolk, Virginia 23508, USA
4. Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529, USA