1. Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznań, Poland
2. Institute of Physics, Kazimierz Wielki University, Powstańców Wielkolpolskich 2, 85-090 Bydgoszcz, Poland
3. Faculty of Mechatronic, Kazimierz Wielki University, Mikołaja Kopernika 1, 85-074 Bydgoszcz, Poland