1. Department of Intelligent Mechatronics Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, South Korea
2. Department of Electrical Engineering, Narowal Campus, University of Engineering and Technology, Lahore 54890, Pakistan
3. Department of Physics, Sejong University, Seoul05006, South Korea
4. Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, South Korea
5. Department of Physics, Riphah International University, 14 Ali Road, Lahore 46000, Pakistan
6. Deparment of Physics, Sungkyunkwan University, Suwon 440-746, South Korea
7. Nanotechnology Research Laboratory, Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi 23640, Khyber Pakhtunkhwa, Pakistan
8. Northwestern University Atomic and Nanoscale Characterization Experimental (NUANCE) Center, Northwestern University, Evanston, Illinois 60208, United States
9. Department of Material Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States