Preparation of ZnO Nanowire Cold Cathode on Hemisphere Brass Substrate for Radiotherapy X-ray Source Application

In this study, ZnO nanowires were grown directly from brass substrate by using thermal oxidation. The results show that ZnO nanowires grown on brass substrate have good field emission properties. A hemispherical cold cathode X-ray source device for intraoperative radiotherapy application is designed and fabricated. The results verified the feasibility of cold cathode hemispherical X-ray source device.