1. Nanomaterials for Emerging Solid State Technology (NEST) Research Laboratory, Department of Physics, Cochin University of Science and Technology, Thrikkakara,Kerala 682022, India
2. Centre of Excellence in Advanced Materials, Cochin University of Science and Technology, Thrikkakara,Kerala 682022, India
3. Inter University Centre for Nanomaterials and Devices (IUCND), Cochin University of Science and Technology, Thrikkakara,Kerala 682022, India