Jun-Tae Kang

TL;DR: The fabrication of a fully vacuum-sealed compact x-ray tube based on focused carbon nanotube (CNT) field-emission electrons for various radiography applications showed a stable and reliable operation, indicating good maintenance of a vacuum level of below 5 × 10(-6) Torr and the possibility of field- Emission x-rays tubes in a stand-alone device without an active pumping system.

TL;DR: In this paper, a digital miniature x-ray tube with a high-density triode carbon nanotube (CNT) field emitter was fabricated for special xray applications, which exhibited stable and reliable operation over 250 h in a pulse mode at an anode voltage of above 25 kV.

TL;DR: In this article, the authors developed highly adhesive uniform field emitters (FEs) from carbon nanotube pastes by reacting nanometer-scale silicon carbide (SiC) fillers on a Kovar substrate at a high temperature in vacuum.

TL;DR: Highly reliable field electron emitters were developed using a formulation for reproducible damage-free carbon nanotube (CNT) composite pastes with optimal inorganic fillers and a ball-milling method, which had high durability to post vacuum annealing at 950 °C and could be used in reliable field emission devices.

TL;DR: In this paper, a fully closed nano-focus X-ray source using carbon nanotube (CNT) field emitters was developed, which includes a fully vacuum-sealed CNT Electron-gun (E-gun) tube and E-beam-focusing modules consisting of electrostatic and magnetic lenses.