A study of field emission from glass spheres, coated with carbon nanotubes

摘要

Carbon nanotubes have excellent field emission (FE) properties. The geometry and morphology of a surface are crucial aspects of this, and a greater understanding of these properties could lead to the design of more efficient FE devices. We compare the FE properties of a flat, multiwall carbon nanotube (MWNT) layer with those of micron-scale glass spheres, coated with MWNT. We compare this experimental data with simulations and present this as experimental verification of the giant multistage geometric enhancement effect.