scholarly journals Field emission of carbon nanotube under atmospheric pressure

2011 ◽  
Vol 60 (2) ◽  
pp. 028801
Author(s):  
Qian Li ◽  
Wang Yu-Quan ◽  
Liu Liang ◽  
Fan Shou-Shan
Author(s):  
N. F. Ziegler

A high-voltage terminal has been constructed for housing the various power supplies and metering circuits required by the field-emission gun (described elsewhere in these Proceedings) for the high-coherence microscope. The terminal is cylindrical in shape having a diameter of 14 inches and a length of 24 inches. It is completely enclosed by an aluminum housing filled with Freon-12 gas at essentially atmospheric pressure. The potential of the terminal relative to ground is, of course, equal to the accelerating potential of the microscope, which in the present case, is 150 kilovolts maximum.


2013 ◽  
Vol 9 (5) ◽  
pp. 619-623 ◽  
Author(s):  
Shama Parveen ◽  
Samina Husain ◽  
Avshish Kumar ◽  
Javid Ali ◽  
Mubashshir Husain ◽  
...  

2006 ◽  
Vol 37 (6) ◽  
pp. 495-499 ◽  
Author(s):  
Fan-Guang Zeng ◽  
Chang-Chun Zhu ◽  
Weihua Liu ◽  
Xinghui Liu

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1810
Author(s):  
Mengjie Li ◽  
Qilong Wang ◽  
Ji Xu ◽  
Jian Zhang ◽  
Zhiyang Qi ◽  
...  

Due to the high field enhancement factor and photon-absorption efficiency, carbon nanotubes (CNTs) have been widely used in optically induced field-emission as a cathode. Here, we report vertical carbon nanotube arrays (VCNTAs) that performed as high-density electron sources. A combination of high applied electric field and laser illumination made it possible to modulate the emission with laser pulses. When the bias electric field and laser power density increased, the emission process is sensitive to a power law of the laser intensity, which supports the emission mechanism of optically induced field emission followed by over-the-barrier emission. Furthermore, we determine a polarization dependence that exhibits a cosine behavior, which verifies the high possibility of optically induced field emission.


2021 ◽  
Vol 28 (3) ◽  
pp. 033506
Author(s):  
E. Cejas ◽  
L. Prevosto ◽  
F. O. Minotti ◽  
M. Ferreyra ◽  
J. C. Chamorro ◽  
...  

2008 ◽  
Vol 18 (47) ◽  
pp. 5753 ◽  
Author(s):  
Cameron James Shearer ◽  
Jingxian Yu ◽  
Kane Michael O'Donnell ◽  
Lars Thomsen ◽  
Paul Christopher Dastoor ◽  
...  

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