scholarly journals Field-emission current densities of carbon nanotube under the different electric fields

2015 ◽  
Vol 64 (19) ◽  
pp. 197304
Author(s):  
Wang Yi-Jun ◽  
Cheng Yan
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Electric Fields ◽  
Emission Current ◽  
Field Emission Current ◽  
Current Densities

Dependence of enhancement factor on electrode size for field emission current from carbon nanotube on silicon wafer

2019 ◽  
Vol 30 (42) ◽  
pp. 425201
Author(s):  
Keita Funayama ◽  
Hiroya Tanaka ◽  
Jun Hirotani ◽  
Keiichi Shimaoka ◽  
Yutaka Ohno ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Silicon Wafer ◽  
Field Emission ◽  
Enhancement Factor ◽  
Emission Current ◽  
Electrode Size ◽  
Field Emission Current

Influence of Cathode Size on Field Emission Properties of a Single Vertical Carbon Nanotube Material

2016 ◽  
Vol 723 ◽  
pp. 454-458 ◽  
Author(s):  
Li Guo Jing ◽  
He Qiu Zhang ◽  
Yu Qiu ◽  
Bing Yin ◽  
Li Zhong Hu
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Field Emission ◽  
Emission Current ◽  
Perfect Conductor ◽  
Current Increase ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Field Emission Current ◽  
Constant Potential

In this work, we study the field emission properties of a single vertical carbon nanotube with cathode radius changing. The carbon nanotube is considered as purely perfect conductor, and the anode and cathode are modeled as discs. The radius of anode is kept as 24m, then the radius of cathode is changed from 24 m to 1 m. The emitter of that CNT consists of a hemispherical cap of 4 nm radius (r) on top of a cylinder height of 2 m (h). The distance from anode to cathode is w=h+20m. The overall surface area of the CNT and cathode are all grounded, and the anode plate has a constant potential value of 100 V. The distribution of potential and electric field, field emission current are obtained by simulating with the help of COMSOL Multiphysics 4.3b electrostatics module. We find that with cathode radius decrease, the electric field strength over the surface of carbon nanotube (CNT) strengthening and field emission current increase.

Carbon Nanotube Fiber Cathodes and Saturation of their Field Emission Current:

2021 ◽  
Author(s):  
Evgenii P. Sheshin ◽  
Ilya N. Kosarev ◽  
Bulat I. Masnaviev ◽  
Dmitry I. Ozol
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Emission Current ◽  
Carbon Nanotube Fiber ◽  
Field Emission Current

scholarly journals Large field emission current and density from robust carbon nanotube cathodes for continuous and pulsed electron sources

2017 ◽  
Vol 60 (4) ◽  
pp. 335-342 ◽  
Author(s):  
Jiangtao Chen ◽  
Bingjun Yang ◽  
Xiahui Liu ◽  
Juan Yang ◽  
Linfan Cui ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Emission Current ◽  
Large Field ◽  
Electron Sources ◽  
Field Emission Current

Large field emission current density from well-aligned carbon nanotube field emitter arrays

2001 ◽  
Vol 1 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Jung Inn Sohn ◽  
Seonghoon Lee ◽  
Yoon-Ho Song ◽  
Sung-Yool Choi ◽  
Kyoung-Ik Cho ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Current Density ◽  
Emission Current Density ◽  
Emission Current ◽  
Large Field ◽  
Field Emitter ◽  
Field Emitter Arrays ◽  
Field Emission Current ◽  
Field Emission Current Density
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