A Comparative Analysis of Field Electron Emission from Carbon Black Embedded within Insulated Copper Hollowed Wires and Glass Tubes

In this study, two different methods are used to investigate carbon black as a cold field electron emitter. The first method is to incorporate carbon black into a specially designed insulated copper hollowed wire. The wire has a cup-shaped structure created by electrochemical etching. The second method involves the incorporation of carbon black into narrow glass tubes. A Comparative analyses is carried out to evaluate the effectiveness of each method. To evaluate the performance of the samples, the current-voltage characteristics will be examined using field electron microscopes. This analysis will provide an understanding of the emission of the carbon black under different conditions. Furthermore, the obtained data will be are analysed and interpreted using Murphy-Good plots. Murphy-Good plots are a common graphical tool for measuring electron emission. The aim of this research is to identify the most effective and reliable techniques for the use the carbon black as a cold-field electron emitter. The research findings will contribute to the development of advanced electron emission technologies. They will also provide valuable information for the design and optimization of carbon black-based electron sources.