1. Centre for Nanoscience & Technology, Madanjeet School of Green Energy TechnologiesPondicherry UniversityPuducherry India
2. Department of PhysicsPondicherry UniversityPuducherry India
3. Department of PhysicsPondicherry Engineering CollegePondicherry India
4. Institute of Aeronautical EngineeringDundigal Hyderabad India
5. Lam research corporationFremont California94538