Fabrication of Carbon Nanotube Field-Emission Cathodes by Laser-Induced Transfer of Carbon Nanotubes and Silver Paste

2014 ◽  
Vol 10 (12) ◽  
pp. 1083-1087 ◽  
Author(s):  
Hung-Yu Liao ◽  
Jeng-Rong Ho ◽  
Shiang-Kuo Chang-Jian
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Silver Paste ◽  
Field Emission Cathodes

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.

Improved Field-Emission Properties of Carbon Nanotube Field-Emission Arrays by Controlled Density Growth of Carbon Nanotubes

2005 ◽  
Vol 44 (1A) ◽  
pp. 365-370 ◽  
Author(s):  
Chuan-Ping Juan ◽  
Kuo-Ji Chen ◽  
Chun-Chien Tsai ◽  
Kao-Chao Lin ◽  
Wei-Kai Hong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Density Growth ◽  
Field Emission Arrays

Study of Field Emission Behavior of Carbon Nanotubes with Different Sources

2002 ◽  
Vol 728 ◽  
Author(s):  
Mark Ching-Cheng Lin ◽  
M.S. Lai ◽  
H. J. Lai ◽  
M. H. Yang ◽  
B.Y. Wei ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Arc Discharge ◽  
Metal Catalyst ◽  
Microstructural Investigation ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Different Sources

AbstractThe field emission properties of carbon nanotubes (CNTs) from various sources are investigated for the application of field emission displays. Comparisons are made between graphite with Ni metal as catalyst and polycyclic aromatic hydrocarbon as precursor by the arc discharge method. Cathode deposits are examined using scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) to determine microstructure. Carbon structure is studied using Raman spectroscopy. Electron field emission characteristics are measured with the diode method at 10-6 torr pressure. In this study, SEM micrographs of cathode deposits show dense random fiber-like carbon nanotubes. The HRTEM images clearly exhibit characteristic features of multiwalled carbon nanotubes. Microstructural investigation provides evidence that both the metal catalyst and the precursor can be used to synthesize carbon nanotubes. The Raman spectrum shows a stronger peak at about 1580 cm-1 indicating formation of a well-graphitized carbon nanotube. The degree of carbon nanotube graphitization is high and is in good agreement with the HRTEM result. From field emission measurements, the lowest onset field is about 1.0 V/μm and can be attributed to highly sharp tips and the high density of carbon nanotubes. Based on microstructure characterization and field emission measurements, the influence on field emission properties including turn on voltage and threshold voltage of carbon nanotubes synthesized from different sources is discussed.

Room-temperature fabrication of high-resolution carbon nanotube field-emission cathodes by self-assembly

2003 ◽  
Vol 82 (15) ◽  
pp. 2521-2523 ◽  
Author(s):  
S. J. Oh ◽  
Y. Cheng ◽  
J. Zhang ◽  
H. Shimoda ◽  
O. Zhou
Keyword(s):  
Carbon Nanotube ◽  
High Resolution ◽  
Field Emission ◽  
Self Assembly ◽  
Room Temperature ◽  
Field Emission Cathodes

Carbon nanotube cathodes covered on the cylindrical surface of a fiber

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 17049-17053 ◽  
Author(s):  
Xianqi Wei ◽  
Youzhang Zhu ◽  
Xianjun Xia ◽  
Xiaoli Wang ◽  
Weihuan Liu ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Vapor Deposition ◽  
Cylindrical Surface ◽  
Chemical Vapor ◽  
Quartz Optical Fiber ◽  
Cnt Arrays ◽  
Field Emission Cathodes ◽  
Waveguide Surface

Carbon nanotube (CNT) arrays were synthesized on the cylindrical waveguide surface of a quartz optical fiber by chemical vapor deposition (CVD) to serve as field emission cathodes.

Electric field enhancement in field-emission cathodes based on carbon nanotubes

2010 ◽  
Vol 55 (2) ◽  
pp. 289-295 ◽  
Author(s):  
M. D. Bel’skii ◽  
G. S. Bocharov ◽  
A. V. Eletskii ◽  
T. J. Sommerer
Keyword(s):  
Carbon Nanotubes ◽  
Electric Field ◽  
Field Emission ◽  
Field Enhancement ◽  
Electric Field Enhancement ◽  
Field Emission Cathodes

scholarly journals Microscopic analysis of performance variations in carbon nanotube field emission cathodes: Implications for device optimization

2012 ◽  
Vol 209 (11) ◽  
pp. 2114-2125 ◽  
Author(s):  
Sarah Berhanu ◽  
Oliver Gröning ◽  
Zexiang Chen ◽  
Jacqueline Merikhi ◽  
Monja Kaiser ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Microscopic Analysis ◽  
Device Optimization ◽  
Field Emission Cathodes ◽  
Analysis Of Performance ◽  
Performance Variations

Field Electron Emission from Carbon Nanotube Films on Diamond Films

2005 ◽  
Vol 475-479 ◽  
pp. 3587-3590
Author(s):  
K.J. Liao ◽  
W.L. Wang ◽  
Y.T. Wang ◽  
J.W. Lu ◽  
X.L. Sun
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Field Emission ◽  
Electron Emission ◽  
Diamond Films ◽  
Chemical Vapour ◽  
Polycrystalline Diamond ◽  
Field Electron Emission ◽  
Field Electron ◽  
Nanotube Films

The field electron emission from carbon nanotube films on polycrystalline diamond films was investigated. The carbon nanotubes and diamond films on Si substrates were prepared by a conventional hot filament chemical vapour deposition. The films obtained were characterized by scanning electron microscopy and Raman spectroscopy. The field emission properties of the samples were measured in an ion-pumped vacuum chamber at a pressure of 10-6 Pa.. The experimental results showed that the field emission behaviours of carbon nanotubes/diomond films structure have greatly been improved as compared with carbon nanotubes and diamond films, respectively. A turn-on field of 1.0 V/µm and a maximum current of 500 µA at 1.5 V/µm were observed, which were lower than those of carbon nanotubes and polycrystalline diamond films, respectively. This improvement was attributed to the tip shape of sample surface, which provided an additional local increase in electric field at the tube ends.

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