1. Department of Electrical Engineering, National Institute of Technology Agartala, Barjala, Jirania, Agartala, Tripura 799046, India
2. Department of Electrical Engineering, Columbia University, 500 W. 120th St., Mudd 1310, New York, New York 10027, United States
3. School of Nanoscience and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
4. Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India