1. Department of Physics Rajeev Gandhi Memorial College of Engineering & Technology Nandyal Andhra Pradesh India
2. Department of EEE Rajeev Gandhi Memorial College of Engineering & Technology Nandyal Andhra Pradesh India
3. Sci Laboratory Centre for Materials for Electronics Technology (C‐MET) Hyderabad India
4. Ceramics and Glass Institute (CSIC) Madrid Spain
5. Department of Physics Audisankara College of Engineering & Technology Gudur Andhra Pradesh India
6. Department of Physics Krishna University Dr. MRAR PG Center Nuzvid India
7. Department of Physics Yogi Vemana University Kadapa India