1. Laboratory of Ecological Solutions and Sustainable Development of Materials, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka 3, K-3, LV-1007 Riga, Latvia
2. Institute of Materials and Surface Technologies, Riga Technical University, P. Valdena Iela 7, LV-1048 Riga, Latvia
3. Institute of Physics, University of Latvia, Miera Iela 32, LV-2169 Salaspils, Latvia
4. SMW Group AS, Kr. Barona Street 3-1, LV-1050 Riga, Latvia
5. School of Engineering, London South Bank University, London SE1 0AA, UK
6. Department of Mechanical Engineering, University of Petroleum and Energy Studies, Dehradun 248007, India