1. Lviv Polytechnic National University,Department of Radioelectronic Devices and Systems,Lviv,Ukraine
2. O.G. Vlokh Institute of Physical Optics,Lviv,Ukraine
3. Institute for Condensed Matter Physics,Lviv,Ukraine
4. Lviv Polytechnic National University,Department of Applied Physics and Nanomaterials Science,Lviv,Ukraine
5. SmartMembranes GmbH Halle (Saale),Germany