1. International and Inter University Center for Nanoscience and Nanotechnology Mahatma Gandhi University Kottayam India
2. Institut Jean Lamour Université de Lorraine Nancy France
3. LMOPS/Centrale Supelec EA 4423 Université de Lorraine Nancy France
4. School of Pure and Applied Physics Mahatma Gandhi University Kottayam India
5. School of Energy Materials Mahatma Gandhi University Kottayam India