1. Department of Physics; Chungbuk National University; 52 Naesudong-ro, Heungdeok-gu Cheongju Chungbuk 361-763 South Korea
2. Department of Electrical Engineering; University of Sultan Ageng Tirtayasa; Jend. Sudirman Km. 3 Cilegon Banten 42435 Indonesia
3. Graduate School of Advanced Integration Science; Chiba University; 1-33 Yayoi-cho, Inage-ku Chiba 263-8522 Japan
4. Department of Physics Education; Chungbuk National University; 52 Naesudong-ro, Heungdeok-gu Cheongju Chungbuk 361-763 South Korea