1. Centre for Functional Materials, Department of PhysicsChristian College Chengannur 689122 India
2. Nano Photonics DivisionMSM College Kayamkulam 690502 India
3. International School of PhotonicsCochin University of Science and Technology Cochin 22 India
4. Department of ChemistryChristian College Chengannur 689122 India