Carbon Nanotubes for Cold Electron Sources

2003 ◽  
Vol 5 (8) ◽  
pp. 541-550 ◽  
Author(s):  
P. Gröning ◽  
P. Ruffieux ◽  
L. Schlapbach ◽  
O. Gröning
Keyword(s):  
Carbon Nanotubes ◽  
Cold Electron ◽  
Electron Sources

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.

DETECTION OF INERT GASES BY COLD ELECTRON EMISSION FROM CARBON NANOTUBE EMITTERS

2005 ◽  
Vol 19 (24) ◽  
pp. 1207-1211 ◽  
Author(s):  
SEONGJEEN KIM
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensors ◽  
Electron Emission ◽  
Dark Current ◽  
Gas Adsorption ◽  
Inert Gases ◽  
Inert Gas ◽  
Gas Composition ◽  
Cold Electron ◽  
Electron Emitters

In this work, different from the typical gas sensors responding by gas adsorption on their surface, a new gas sensor using carbon nanotubes (CNTs) as electron emitters is introduced for detecting inert gases which hardly possess chemical or electrical adsorption in normal conditions. The proposed sensor works by figuring out the variation of the dark current and the initial breakdown voltage on Paschen's law under applied high voltage. As they depend on the gas composition and the pressure in a sealed chamber, it is possible to detect the identity and the concentration of unknown inert gas species.

DIRECT GROWTH OF MULTI-WALLED CARBON NANOTUBES ON SHARP TIPS FOR ELECTRON MICROSCOPY

NANO ◽  
2006 ◽  
Vol 01 (01) ◽  
pp. 35-39 ◽  
Author(s):  
M. MANN ◽  
K. B. K. TEO ◽  
W. I. MILNE ◽  
T. TESSNER
Keyword(s):  
Carbon Nanotubes ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Vertical Axis ◽  
Electron Sources ◽  
Multi Walled Carbon Nanotubes ◽  
Direct Growth ◽  
Walled Carbon Nanotubes ◽  
Excellent Stability ◽  
Walled Cnts

The favorable electron optical properties of carbon nanotubes (CNTs) have been studied in detail, but the application to electron sources has been limited by the complexity of the fabrication process. We report the use of Plasma Enhanced Chemical Vapor Deposition (PECVD) for the direct deposition of multi-walled CNTs onto the apex of sharply etched tungsten tips, aligned to the vertical axis of the tips. We show that these emitters have excellent stability.

Carbon nanotubes as electron sources

2006 ◽  
Vol 203 (6) ◽  
pp. 1058-1063 ◽  
Author(s):  
W. I. Milne ◽  
K. B. K. Teo ◽  
M. Mann ◽  
I. Y. Y. Bu ◽  
G. A. J. Amaratunga ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Sources

Cold electron sources using laser-cooled atoms

2016 ◽  
Vol 49 (16) ◽  
pp. 164004 ◽  
Author(s):  
Andrew J McCulloch ◽  
Ben M Sparkes ◽  
Robert E Scholten
Keyword(s):  
Cold Electron ◽  
Electron Sources

Tailoring point electron sources of individual carbon nanotubes

2010 ◽  
Vol 97 (7) ◽  
pp. 073119 ◽  
Author(s):  
Yung-Chang Lin ◽  
Cheng-Da Wu ◽  
Po-Wen Chiu
Keyword(s):  
Carbon Nanotubes ◽  
Electron Sources

Emission Regulation of Cold‐Electron Sources

1967 ◽  
Vol 38 (2) ◽  
pp. 890-891
Author(s):  
R. W. Raible ◽  
B. E. Gilliland ◽  
W. G. Hinson
Keyword(s):  
Cold Electron ◽  
Electron Sources ◽  
Emission Regulation
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