1. Department of Physical Sciences, P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology, CHARUSAT, Changa 388 421, Gujarat, India
2. AESD&CIF, CSIR-CSMCRI, G B Marg, Waghwadi Road, Bhavnagar, Gujarat 364002, India
3. Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani Hyderabad Campus, Hyderabad 500078, India