1. NMS Sermathai Vasan College for Women, Department of Physics, Madurai 625-012, India
2. Government Arts College, PG and Research Department of Physics, Melur, Madurai 625-106, India
3. Kyung Hee University, College of Engineering, Department of Chemical Engineering, 1732 Deogyeong-daero, Gihung, Yongin, Gyeonggi 446-701, Republic of Korea