1. Materials Science & Sensor Application Division, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, India
2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
3. Nanoscience Laboratory, Institute Instrumentation Centre, IIT Roorkee, Roorkee, India
4. Department of Physics, Graphic Era University, Dehradun, India