Phenomenon of pulsed high-power electron emission from graphene-like structures and carbon nanotubes stimulated by electric field

2016 ◽  
Author(s):  
Georgiy Fursey ◽  
Mikhail Polyakov ◽  
Ildar Zakirov
Keyword(s):  
Carbon Nanotubes ◽  
Electric Field ◽  
High Power ◽  
Electron Emission

scholarly journals Field Emission and Growth of Fullerene Nanotubes

1994 ◽  
Vol 359 ◽  
Author(s):  
Andrew G. Rinzler ◽  
Jason H. Hafner ◽  
Daniel T. Colbert ◽  
Richard E. Smalley
Keyword(s):  
Carbon Nanotubes ◽  
Electric Field ◽  
Field Emission ◽  
Bias Voltage ◽  
Electron Emission ◽  
Seed Crystals ◽  
Growth Method ◽  
Carbon Arc ◽  
Emission Behavior

ABSTRACTEfforts to control the growth of individual carbon nanotubes from nanotube seed crystals have led to a characterization of their field-induced electron emission behavior. The application of a bias voltage in our growth apparatus was motivated by the prolific formation of nanotubes in the carbon arc growth method, in which the electric field appears to play a central role. We report here the ability to achieve various tube tip configurations by the controlled application of voltage, heat and chemicals to an individual nanotube, and that these states are well characterized by the emission currents they induce.

Electron Emission from Microwave-Plasma Chemically Vapor Deposited Carbon Nanotubes

2000 ◽  
Vol 621 ◽  
Author(s):  
Yonhua Tzeng ◽  
Chao Liu ◽  
Calvin Cutshaw ◽  
Zheng Chen
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electric Field ◽  
Electron Emission ◽  
Microwave Plasma ◽  
High Vacuum ◽  
Field Enhancement ◽  
Current Voltage ◽  
Microwave Plasma Cvd ◽  
Field Emission Of Electrons

ABSTRACTA microwave plasma CVD reactor was used for the deposition of carbon nanotubes on substrates. Hydrocarbon or oxyhydrocarbon mixtures were used as the carbon source. Hot electrons in the microwave plasma at temperatures exceeding 10,000C provided a means of dissociating the vapor or gas feedstock, heating the substrate, and allowing gas species to react in the gas phase as well as on the surface of the substrate leading to the deposition of desired carbon coatings. A high vacuum chamber was used to characterize the electron emission properties of these carbon nanotube coatings using a one-millimeter diameter tungsten rod with a hemispherical tip as the anode while the carbon nanotube coatings served as the cathode. The current-voltage characteristics of the carbon nanotube coatings were measured and used for calculating the electric field at which electron emission turned on as well as calculating the field enhancement factor of the carbon nanotubes. Field emission of electrons from carbon nanotubes starting from an electric field lower than 1 volt per micrometer has been achieved.

Hot-Filament Assisted Fabrication of Carbon-Nanotube Electron Emitters

2000 ◽  
Vol 621 ◽  
Author(s):  
Yonhua Tzeng ◽  
Chao Liu ◽  
Zheng Chen
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electric Field ◽  
Electron Emission ◽  
High Vacuum ◽  
Field Enhancement ◽  
Current Voltage ◽  
Electron Emitters ◽  
Hot Filament ◽  
Field Emission Of Electrons

ABSTRACTA hot-filament CVD reactor was used for the deposition of carbon nanotubes on substrates. Hydrocarbon or oxyhydrocarbon mixtures were used as the carbon source. Hot filaments at temperatures exceeding 2000C provided a means of dissociating the vapor or gas feedstock, heating the substrate, and allowing gas species to react in the gas phase as well as on the surface of the substrate leading to the deposition of desired carbon coatings. A high vacuum chamber was used to characterize the electron emission properties of these carbon nanotube coatings using a one-millimeter diameter tungsten rod with a hemispherical tip as the anode while the carbon nanotube coatings served as the cathode. The current-voltage characteristics of the carbon nanotube coatings were measured and used for calculating the electric field at which electron emission turned on as well as calculating the field enhancement factor of the carbon nanotubes. Field emission of electrons from carbon nanotubes starting from an electric field of as low as 1-2 volts per micrometer was achieved.

scholarly journals Coulomb blockade in field electron emission from carbon nanotubes

2021 ◽  
Vol 118 (5) ◽  
pp. 053101
Author(s):  
Victor I. Kleshch ◽  
Vitali Porshyn ◽  
Pavel Serbun ◽  
Anton S. Orekhov ◽  
Rinat R. Ismagilov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Emission ◽  
Coulomb Blockade ◽  
Field Electron Emission ◽  
Field Electron

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.

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