1. Department of Nanofusion Engineering and Department of Cogno-Mechatronics Engineering (WCU); Pusan National University; Miryang 627-706 Republic of Korea
2. Institute of Applied Materials Science; Vietnam Academy of Science and Technology; Ho Chi Minh City Vietnam
3. Department of Chemistry; University of Chicago; Chicago IL 60637 USA
4. Department of Cogno-Mechatronics Engineering, Physics Education and Physics; Pusan National University; Busan 609-735 Republic of Korea