Current saturation mechanisms in carbon nanotube field emitters

2000 ◽  
Vol 76 (3) ◽  
pp. 375-377 ◽  
Author(s):  
Kenneth A. Dean ◽  
Babu R. Chalamala
Keyword(s):  
Carbon Nanotube ◽  
Field Emitters ◽  
Current Saturation

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

On-chip vacuum microtriode using carbon nanotube field emitters

2002 ◽  
Vol 80 (20) ◽  
pp. 3820-3822 ◽  
Author(s):  
C. Bower ◽  
W. Zhu ◽  
D. Shalom ◽  
D. Lopez ◽  
L. H. Chen ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Field Emitters ◽  
On Chip

Novel ring structure for minimisation of screening effect in carbon nanotube based field emitters

2013 ◽  
Vol 10 (1) ◽  
pp. 45-55 ◽  
Author(s):  
Seema Gautam ◽  
Preeti V. Shah ◽  
Pika Jha ◽  
Monika Kumari ◽  
Mamta Khaneja ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Ring Structure ◽  
Screening Effect ◽  
Field Emitters

Carbon Nanotube Lateral Field Emitters with Metallic Anode

2006 ◽  
Author(s):  
Y. M. Wong ◽  
W. P. Kang ◽  
J. L. Davidson ◽  
B. K. Choi ◽  
J. H. Huang
Keyword(s):  
Carbon Nanotube ◽  
Lateral Field ◽  
Field Emitters

Development of super miniature x-ray tube for brachytherapy using carbon nanotube field emitters

Brachytherapy ◽  
2009 ◽  
Vol 8 (2) ◽  
pp. 149 ◽  
Author(s):  
Sunghwan Heo ◽  
Aamir Ihsan ◽  
Sungoh Cho
Keyword(s):  
Carbon Nanotube ◽  
X Ray ◽  
Field Emitters

Development of fully vacuum-sealed X-ray tubes with carbon nanotube field emitters

2012 ◽  
Author(s):  
Yoon-Ho Song ◽  
Jae-Woo Kim ◽  
Jin-Woo Jeong ◽  
Jun-Tae Kang ◽  
Sungyoul Choi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
X Ray ◽  
Field Emitters
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