1. PG and Research Department of Physics, Thiru. A. Govindasamy Government Arts College Tindivanam Tamilnadu 604307 India
2. PG and Research Department of Chemistry, Thiru. A. Govindasamy Government Arts College Tindivanam Tamilnadu 604307 India
3. Post Graduate & Research Department of Physics, Thiru. Vi. Kalyanasundaram. Govt Arts and Science College, Thiruvaur, Tamilnadu 610003, India. (Affiliated to Bharahidasan University, Thiruchirapalli)
4. Department of Physics, Centre for Crystal Growth, SSN College of Engineering Kalavakkam Chennai Tamilnadu 603110 India