1. Applied Physics Lab for PLasma Engineering (APPLE), Department of Physics, Chungnam National University, Daejeon 34134, South Korea
2. Nanotech, Inc., Yongin, Gyeonggi Province, 16882, South Korea
3. Department of Plasma Engineering, Korea Institute of Machinery and Materials (KIMM), Daejeon 34103, South Korea
4. Institute of Quantum Systems (IQS), Chungnam National University, 34134 Daejeon, South Korea