1. Institute of Applied Research; Vilnius University; 10222 Vilnius Lithuania
2. Institute of Physics; Academy of Sciences of Belarus; 220072 Minsk Belarus
3. Institute for Materials Research (IMO); Hasselt University; 3590 Diepenbeek Belgium
4. XIOS University College Limburg; 3590 Diepenbeek Belgium
5. IMOMEC; IMEC vzw; 3590 Diepenbeek Belgium