| Autor: |
Rajasree Ramachandran, Debabrata Biswas |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
2021 34th International Vacuum Nanoelectronics Conference (IVNC). |
| DOI: |
10.1109/ivnc52431.2021.9600738 |
| Popis: |
The dependence of the notional emission area on the apex electric field for a single field-emitter tip is investigated for cylindrical posts. It is found that a power-law dependence on the local field exists only when the end-cap on the cylinder is modelled as a hemi-ellipsoid with height h e ≥ 3R a . Specifically, for a hemispherical end-cap, the notional area does not increase with local field as a power law. The power law behaviour is expected to hold for generic end-caps where the end-cap shape closely follows a parabola for ρ ≤ R a . |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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