1. Institute of Plasma Physics, The Czech Academy of Sciences, Za Slovankou 1782/3, 182 00 Prague, Czech Republic
2. Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Trojanova 13, 120 00 Prague, Czech Republic
3. Institute of Physics of Materials, The Czech Academy of Sciences, Zizkova 513/22, 616 62 Brno, Czech Republic
4. Glass Service Corporation, Rokytnice 60, 755 01 Vsetin, Czech Republic
5. Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2896/3, 616 69 Brno, Czech Republic
6. Nanyang Technological University, School of Mechanical and Aerospace Engineering, 50 Nanyang Avenue, 639 798 Singapore