1. Division Chemistry, University Institute of Sciences, Chandigarh University, Mohali, Punjab, India
2. Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
3. Department of UCIRD, Chandigarh University, Mohali, Punjab, India
4. Department of Physics, Panjab University, Chandigarh, India
5. Department of Electrical and Biomedical Engineering, University of Nevada, Reno, NV, USA