1. Nanosensors & Clean Energy Laboratory, Department of Chemistry & Nanoscience and Technology, PSG Institute of Advanced Studies, Coimbatore 641004, INDIA
2. Department of Mechanical Engineering, PSG Institute of Technology and Applied Research, Coimbatore 641 062, INDIA
3. Nanostructured Surfaces and Thin Films Laboratory, Department of Physics, PSG Institute of Advanced Studies, Coimbatore 641004, INDIA