Oxygen and ozone oxidation-enhanced field emission of carbon nanotubes

2002 ◽  
Vol 80 (25) ◽  
pp. 4819-4821 ◽  
Author(s):  
Sheng-Chin Kung ◽  
Kuo Chu Hwang ◽  
I. Nan Lin
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission ◽  
Ozone Oxidation

Effect of adsorbates on field emission from flame-synthesized carbon nanotubes

2008 ◽  
Vol 41 (19) ◽  
pp. 195401 ◽  
Author(s):  
Chun Li ◽  
Guojia Fang ◽  
Xiaoxia Yang ◽  
Nishuang Liu ◽  
Yuping Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission

scholarly journals Residual Gas Adsorption and Desorption in the Field Emission of Titanium-Coated Carbon Nanotubes

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2937 ◽  
Author(s):  
Huzhong Zhang ◽  
Detian Li ◽  
Peter Wurz ◽  
Yongjun Cheng ◽  
Yongjun Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission ◽  
Photoelectron Spectroscopy ◽  
Gas Adsorption ◽  
Mass Spectrometry Analysis ◽  
Emission Characteristic ◽  
Spectrometry Analysis ◽  
Pristine Cnts ◽  
Xps Characterization ◽  
Residual Gas

Titanium (Ti)-coated multiwall carbon nanotubes (CNTs) emitters based on the magnetron sputtering process are demonstrated, and the influences of modification to CNTs on the residual gas adsorption, gas desorption, and their field emission characteristic are discussed. Experimental results show that Ti nanoparticles are easily adsorbed on the surface of CNTs due to the “defects” produced by Ar+ irradiation pretreatment. X-ray photoelectron spectroscopy (XPS) characterization showed that Ti nanoparticles contribute to the adsorption of ambient molecules by changing the chemical bonding between C, Ti, and O. Field emission of CNTs coated with Ti nanoparticles agree well with the Fowler–Nordheim theory. The deviation of emission current under constant voltage is 6.3% and 8.6% for Ti-CNTs and pristine CNTs, respectively. The mass spectrometry analysis illustrated that Ti-coated CNTs have a better adsorption capacity at room temperature, as well as a lower outgassing effect than pristine CNTs after degassing in the process of field emission.

scholarly journals Carbon Nanotube Electron Sources: From Electron Beams to Energy Conversion and Optophononics

2014 ◽  
Vol 2014 ◽  
pp. 1-23 ◽  
Author(s):  
Alireza Nojeh
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission ◽  
Electron Emission ◽  
Electron Beams ◽  
Thermionic Emission ◽  
Secondary Emission ◽  
Electron Sources ◽  
Field Emitters ◽  
Electron Microscopes ◽  
Electron Emitters

Carbon nanotubes have a host of properties that make them excellent candidates for electron emitters. A significant amount of research has been conducted on nanotube-based field-emitters over the past two decades, and they have been investigated for devices ranging from flat-panel displays to vacuum tubes and electron microscopes. Other electron emission mechanisms from carbon nanotubes, such as photoemission, secondary emission, and thermionic emission, have also been studied, although to a lesser degree than field-emission. This paper presents an overview of the topic, with emphasis on these less-explored mechanisms, although field-emission is also discussed. We will see that not only is electron emission from nanotubes promising for electron-source applications, but also its study could reveal unusual phenomena and open the door to new devices that are not directly related to electron beams.

Electronic Structure and Field‐Emission Properties of Nitrogen‐Doped Carbon Nanotubes

2006 ◽  
Vol 14 (2-3) ◽  
pp. 151-164 ◽  
Author(s):  
A. V. Okotrub ◽  
L. G. Bulusheva ◽  
V. V. Belavin ◽  
A. G. Kudashov ◽  
A. V. Gusel'nikov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structure ◽  
Field Emission ◽  
Emission Properties ◽  
Nitrogen Doped ◽  
Field Emission Properties ◽  
Nitrogen Doped Carbon

Electrophoresis deposition and field emission characteristics of planar-gate-type electron source with carbon nanotubes

2008 ◽  
Vol 403 (10-11) ◽  
pp. 1793-1796 ◽  
Author(s):  
Wenhui Lu ◽  
Hang Song ◽  
Yixin Jin ◽  
Hui Zhao ◽  
Haifeng Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission ◽  
Electron Source ◽  
Emission Characteristics ◽  
Electrophoresis Deposition

Field emission from carbon nanotubes; purified single-walled and multi-walled tubes

1998 ◽  
Vol 73 (1-4) ◽  
pp. 1-6 ◽  
Author(s):  
Yahachi Saito ◽  
Koji Hamaguchi ◽  
Koichi Hata ◽  
Kazuyuki Tohji ◽  
Atsuo Kasuya ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Field Emission
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