1. Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
2. Centre for Nanotechnology Research, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
3. King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
4. Department of Self Development Skills, CFY Deanship, King Saud University, Riyadh 11451, Saudi Arabia