1. Institute of Physics, West Pomeranian University of Technology, Szczecin, al. Piastów 48, 70-311 Szczecin, Poland
2. Department of Inorganic and Analytical Chemistry, Faculty of Technology and Chemical Engineering, West Pomeranian University of Technology, Szczecin, al. Piastów 42, 70-065 Szczecin, Poland
3. Department of Electrical Engineering, Ajman University of Science and Technology, P.O. Box 346, Ajman, UAE