1. Department of Studies in Chemistry, Mangalore University, Mangalagangothri, Mangalore, Karnataka, India
2. Chemistry of Interfaces, Division of Chemical Engineering, Luleå University of Technology, Luleå, Sweden
3. Institution of Excellence, Vijnana Bhavana, Manasagangotri, University of Mysore, Mysore, Karnataka, India
4. Department of Studies in Physics, Manasagangotri, University of Mysore, Mysore, Karnataka, India