1. Institute of Physics; Academy of Sciences of the Czech Republic; Cukrovarnicka 10, 162 00 Prague 6 Czech Republic
2. Faculty of Electrical Engineering; Czech Technical University in Prague; Technicka 2 16627 Prague Czech Republic
3. Faculty of Science, Department of Genetics and Microbiology; Charles University in Prague; Vinicna 5 12844 Prague Czech Republic
4. Danubia NanoTech; s.r.o.; Ilkovicova 3 841 04 Bratislava Slovak Republic
5. Faculty of Physics, Physics of Nanostructured Materials; University of Vienna; Boltzmanngasse 5 1090 Vienna Austria