1. Faculty of Science and Engineering, Sustainable Product Engineering Centre for Innovative Functional Industrial Coatings, Swansea University Bay Campus, Fabian Way Swansea SA1 8EN UK
2. Advanced Materials and Metrology Division Council of Scientific And Industrial Research ‐ National Physical Laboratory Dr. K. S. Krishnan Marg New Delhi 110012 India
3. Department of Physics University of Jammu Jammu Jammu and Kashmir 180006 India
4. Department of Conducting Polymers Institute of Macromolecular Chemistry, Czech Academy of Sciences Prague 6 162 06 Czech Republic
5. Department of Physics Khalifa University of Science and Technology P. O. Box 127788 Abu Dhabi United Arab Emirates