Notice of Removal: Field Emission from Nanocomposite Carbon Materials with Ultrafine Diamonds
| Autor: | D. V. Nefedov, R. K. Yafarov, Vitaliy Ya. Shanygin |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanocomposite chemistry.chemical_element Diamond Field strength 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Cathode 0104 chemical sciences Anode law.invention Field electron emission chemistry law engineering Graphite Composite material 0210 nano-technology Carbon |
| Zdroj: | 2019 International Vacuum Electronics Conference (IVEC). |
| DOI: | 10.1109/ivec.2019.8745281 |
| Popis: | The results of field emission studies of planar and end film diamond graphite cathodes are presented. The formation of diamond graphite cathodes was carried out during microwave plasma-chemical deposition of carbon material from low-pressure ethanol vapor. This material contains diamond nanocrystallites enclosed in graphite and polymer-like hydrocarbon matrices. Studies of field emission current-voltage characteristics were performed in a pulsed mode with a pulse duration of 10–50 μs. It was found that the working density of field emission currents at a planar case was 0.7-0.8 A/cm2 with an anode field strength of about 75 V/μm. At end measurements, the maximum density of field emission currents reached 7 mA at an anode field strength of 170 V/μm, which corresponds to the effective density of field emission current from the end of the diamond graphite film of about 2300 A/cm2. |
| Databáze: | OpenAIRE |
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