A low-vacuum ionization gauge with HfC-modified carbon nanotube field emitters

2008 ◽  
Vol 92 (15) ◽  
pp. 153105 ◽  
Author(s):  
YuanChao Yang ◽  
Li Qian ◽  
Jie Tang ◽  
Liang Liu ◽  
ShouShan Fan
Keyword(s):  
Carbon Nanotube ◽  
Ionization Gauge ◽  
Field Emitters ◽  
Vacuum Ionization

scholarly journals A Cylindrical Triode Ultrahigh Vacuum Ionization Gauge with a Carbon Nanotube Cathode

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1636
Author(s):  
Jian Zhang ◽  
Jianping Wei ◽  
Detian Li ◽  
Huzhong Zhang ◽  
Yongjun Wang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Ultrahigh Vacuum ◽  
Infrared Light ◽  
Vacuum System ◽  
Theoretical Simulation ◽  
Ionization Gauge ◽  
Potential Applications ◽  
Vacuum Ionization ◽  
Electron Emissions ◽  
Different Gases

In this study, a cylindrical triode ultrahigh vacuum ionization gauge with a screen-printed carbon nanotube (CNT) electron source was developed, and its metrological performance in different gases was systematically investigated using an ultrahigh vacuum system. The resulting ionization gauge with a CNT cathode responded linearly to nitrogen, argon, and air pressures in the range from ~4.0 ± 1.0 × 10−7 to 6 × 10−4 Pa, which is the first reported CNT emitter-based ionization gauge whose lower limit of pressure measurement is lower than its hot cathode counterpart. In addition, the sensitivities of this novel gauge were ~0.05 Pa−1 for nitrogen, ~0.06 Pa−1 for argon, and ~0.04 Pa−1 for air, respectively. The trend of sensitivity with anode voltage, obtained by the experimental method, was roughly consistent with that gained through theoretical simulation. The advantages of the present sensor (including low power consumption for electron emissions, invisible to infrared light radiation and thermal radiation, high stability, etc.) mean that it has potential applications in space exploration.

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

Posttreatment-Dependent Current Degradation and Role of Tube Length on Morphology of Printed Carbon Nanotube Field Emitters

2005 ◽  
Vol 44 (No. 26) ◽  
pp. L848-L850 ◽  
Author(s):  
Yong Churl Kim ◽  
Kwon Hee Sohn ◽  
Young Mok Cho ◽  
Eun Ho Yoo
Keyword(s):  
Carbon Nanotube ◽  
Tube Length ◽  
Field Emitters
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