scholarly journals Field emission behavior of carbon nanotube field emitters after high temperature thermal annealing

AIP Advances ◽  
2014 ◽  
Vol 4 (7) ◽  
pp. 077110 ◽  
Author(s):  
Yuning Sun ◽  
Dong Hoon Shin ◽  
Ki Nam Yun ◽  
Yeon Mo Hwang ◽  
Yenan Song ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Nanotube ◽  
Thermal Annealing ◽  
Field Emission ◽  
Field Emitters ◽  
Emission Behavior

Fabrication and Characterization of Carbon Nanotube Field Emitters

2001 ◽  
Vol 706 ◽  
Author(s):  
Jun Jiao ◽  
Lifeng Dong ◽  
David W. Tuggle ◽  
Catherine L. Mosher ◽  
Sean Foxley ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Applied Field ◽  
Field Emission Properties ◽  
Field Emitters ◽  
Current Saturation ◽  
Electron Field ◽  
Emission Behavior ◽  
Tungsten Tip ◽  
Applied Fields

AbstractWe report an effective procedure for fabricating carbon nanotube emitters by directly synthesizing carbon nanotubes on an electrochemically sharpened tungsten tip. The nanotubes adhere very well to the tip of tungsten without any painting materials. Thermal cleaning of the tungsten tip under applied electric field reduced the number of nanotubes formed on the tip resulting in a single nanotube emitter. Electron field emission properties were investigated by employing a field emission microscope with a base pressure ~ 1 × 10-9 Torr. The emission images with respect to the applied field and time were obtained. Different emission images consisting of one to four lobes at different applied fields were observed. The characteristic of the emission current vs. applied voltage was analyzed. Applied potentials up to 3000 V were tested. The estimated field on the emitter was on the order of several tens of volts per nanometer. Our investigation suggests that at lower fields, the I-V characteristic of the nanotube emitter follows Fowler-Nordheim (F-N) emission behavior. At higher applied field, current saturation was observed.

Enhanced Field Emission Properties of Carbon Nanotube Based Field Emitters by Dynamic Oxidation

2013 ◽  
Vol 9 (5) ◽  
pp. 619-623 ◽  
Author(s):  
Shama Parveen ◽  
Samina Husain ◽  
Avshish Kumar ◽  
Javid Ali ◽  
Mubashshir Husain ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Field Emitters ◽  
Dynamic Oxidation

Field Emission Behavior of Carbon Nanotube Yarn for Micro-Resolution X-Ray Tube Cathode

2013 ◽  
Vol 13 (11) ◽  
pp. 7386-7390 ◽  
Author(s):  
Jae Won Hwang ◽  
Chan Bin Mo ◽  
Hyun Kyu Jung ◽  
Seongwoo Ryu ◽  
Soon Hyung Hong
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
X Ray ◽  
Emission Behavior

scholarly journals Excellent field emission properties from carbon nanotube field emitters fabricated using a filtration-taping method

2014 ◽  
Vol 15 (3) ◽  
pp. 214-217 ◽  
Author(s):  
Dong Hoon Shin ◽  
Seung Jung ◽  
Ki Nam Yun ◽  
Guohai Chen ◽  
Seok-Gy Jeon ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Field Emitters

Electron cold sources: Nanotechnology contribution to field emitters

2017 ◽  
Author(s):  
Vu Thien Binh
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Driving Forces ◽  
Industrial Applications ◽  
Single Atom ◽  
Cold Cathodes ◽  
Field Emitters ◽  
Carbon Nanopearls ◽  
Field Emission Cathodes

This article reviews recent advances in field emission cathodes and their applications, focusing on a number of possibilities emerging from the field of nanotechnology. It begins with an overview of the driving forces for the evolution of cold cathodes, laying emphasis on their fundamental characteristics and industrial applications as well as the bottlenecks of metallic field emitters. It then considers single-atom emitters, followed by different examples where the advent of nanotechnology has contributed towards improving new cold cathodes. It also discusses the Fresnel projection microscope and the microgun, a route to the microcolumn approach which is associated with the nanotip; a host of material issues for field emitters, taking into account carbon nanocompounds; carbon-nanotube field emitters; and carbon-nanopearl field emitters. The article concludes with an evaluation of the applications and uses of carbon nanocompounds, carbon nanotubes and carbon nanopearls as cold cathodes.

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