1. Department of Materials Science and Engineering, Nanoscience Research Laboratory, National Institute of Technology Calicut, Calicut, Kerala, India
2. Department of Chemistry, Vel Tech Rangarajan Dr Sagunthala R&D Institute of Science and Technology, 400 Feet Outer Ring Road, Avadi, Chennai, Tamil Nadu 600062, India
3. Department of Materials Science and Engineering, National Institute of Technology Calicut, Calicut, Kerala, India