1. Faculty of Biology and Solid-State Microelectronics
Laboratory, Drohobych Ivan Franko State Pedagogical University, 24 I. Franko Str., Drohobych 82100, Ukraine
2. Research Institute
of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
3. Physics
Department, Faculty of Science, Minia University, P.O. Box 61519, Minia, Egypt
4. Institute of Physics of Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 84511, Slovak Republic
5. Kazan Physical-Technical Institute of Russian Academy of Sciences, 10/7 Sibirskiy trakt, Kazan 420029, Russian Federation