1. Graphic Era Deemed to be University, Department of Allied Science, Dehradun, India
2. Department of Physics, BHU, Varanasi, India
3. Graphic Era Hill University, Department of Physics, Dehradun, India
4. Ionic Liquid and Nano Materials Laboratory, Department of Physics, Faculty of Engineering and Technology, V. B. S. Purvanchal University, Jaunpur, India