1. International and Inter University Center for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala, India
2. Amal Jyothi College of Engineering, Kanjirappally, Kottayam, Kerala, India
3. Pushpagiri Research Center, Pushpagiri Institute of Medical Sciences, Tiruvalla, Kerala, India
4. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, Kerala, India
5. School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala, India