1. Department of Physics, University of Kerala, Thiruvananthapuram, Kerala 695015, India
2. College of Biotechnology, Al-Qasim Green University, Babylon 51013, Iraq
3. Department of Nanoscience and Nanotechnology, University of Kerala, Thiruvananthapuram, Kerala 695015, India
4. College of Food Sciences, Al-Qasim Green University, Babylon 51013, Iraq