GaN/Sapph substrate of 2 in diameter MBE group May 2018 Marta Sawicka MBE Gen20 machine MBE VG Semicon machine Effusion cell Maszyna MBE Gen20 Maszyna MBE Gen20 Maszyna MBE VG Semicon Prof. Skierbiszewski, prof. H. Amano and prof. Z. Sitar Mikołaj Chlipała Nanopours GaN DFBs Flowers :-)