Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10672443 | Ultramicroscopy | 2015 | 11 Pages |
Abstract
Electron field emission is understood as a quantum mechanical many-body problem in which an electronic quasi-particle of the emitter is converted into an electron in vacuum. Fundamental concepts of field emission, such as the field enhancement factor, work-function, edge barrier and emission current density, will be investigated, using carbon nanotubes and graphene as examples. A multi-scale algorithm basing on density functional theory is introduced. We will argue that such a first principle approach is necessary and appropriate for field emission of nano-structures, not only for a more accurate quantitative description, but, more importantly, for deeper insight into field emission.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Zhibing Li,