1. Department of Physics, Queen Mary's College, Chennai, Tamil Nadu, India
2. Department of Physics, Women's Christian College, Nagercoil, Tamil Nadu, India
3. Department of Physics, Madras Christian College, Chennai, Tamil Nadu, India
4. Department of Chemistry, Mangalore University, Mangalagangotri, Karnataka, India
5. School of Applied Science, K.K. University, Berauti, Biharsharif, Nalanda, Bihar, India
6. Department of Botany and Microbiology, College of Science, King Saud University, Saudi Arabia
7. Department of Chemistry, Centre for Material Chemistry, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India
8. Department of Physics, Arignar Anna Govt. Arts College, Cheyyar, Tamil Nadu, India