Late May an interinstitutional exchange took place at IEE SAS. A delegation from University of Žilina led by Prof. Dušan Pudiš have visited us and presented the newly started collaboration on UV photonics based on Ga₂O₃. Mr Marek Zdurienčík also took part in the Ga₂O₃ growth and processing of Ga₂O₃ based photonic structures. We are excited the CUBES has attracted more experts and allowed the UWBG research in V4 to expand.