1. Council of Scientific and Industrial Research (CSIR)- National Institute of Oceanography (NIO), Regional Centre Cochin, Kerala, India
2. Department of Physics, Cochin University of Science and Technology, Cochin, Kerala, India
3. Department of Chemistry, National Institute of Technology Calicut, Calicut, Kerala, India
4. Deparment of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telangana, India
5. Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0020, Japan