1. Department of Physics, National Institute of Technology Silchar, Silchar 788010, Assam, India
2. Centre for Reliability Science and Technology, Chang Gung University, Wenhua First Rd., Guishan Dist., Taoyuan City 33302, Taiwan
3. Department of Electronics Engineering, Chang Gung University, Wenhua First Rd., Guishan Dist., Taoyuan City 33302, Taiwan
4. Institute of Nano Science and Technology, Mohali 140306, Punjab, India
5. Department of Applied Science and Humanities, Assam University, Silchar -788011, Assam, India