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Flexible Field Emitter for X-ray Generation by Implanting CNTs into Nickel Foil.

Sun B, Wang Y, Ding G - Nanoscale Res Lett (2016)

Bottom Line: By embedding CNT roots into Ni foil using polymer matrix as transfer media, effective direct contact between Ni and CNTs was achieved.As a result, our novel emitter shows relatively good field emission properties such as low turn-on field and good stability.The gray shadow that appears on the sensitive film after being exposed to the radiation confirms the successful generation of X-ray.

View Article: PubMed Central - PubMed

Affiliation: National Key Laboratory of Micro/Nano Fabrication Technology, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.

ABSTRACT
This paper reports a novel implanting micromachining technology. By using this method, for the first time, we could implant nano-scale materials into milli-scale metal substrates at room temperature. Ni-based flexible carbon nanotube (CNT) field emitters were fabricated by the novel micromachining method. By embedding CNT roots into Ni foil using polymer matrix as transfer media, effective direct contact between Ni and CNTs was achieved. As a result, our novel emitter shows relatively good field emission properties such as low turn-on field and good stability. Moreover, the emitter was highly flexible with preservation of the field emission properties. The excellent field emission characteristics attributed to the direct contact and the strong interactions between CNTs and the substrate. To check the practical application of the novel emitter, a simple X-ray imaging system was set up by modifying a traditional tube. The gray shadow that appears on the sensitive film after being exposed to the radiation confirms the successful generation of X-ray.

No MeSH data available.


Photographs of a the developed sensitive plate and the Ni badge on it; the inset shows the magnitude of the Ni badge. b Magnitude of the blackened shadow
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Fig11: Photographs of a the developed sensitive plate and the Ni badge on it; the inset shows the magnitude of the Ni badge. b Magnitude of the blackened shadow

Mentions: Then, a Ni badge with a thickness of 100 μm and diameter of 3 mm was placed between the pin hole and the sensitive plate. The sensitive plate and the badge were exposed to the radiation under an applied voltage of 2.7 kV and emission current of 81 μA for 30 min to compensate for the X-ray energy loss. Figure 11 shows the X-ray transmission image of the Ni badge, and a fuzzy image was obtained at a relatively low applied voltage.Fig. 11


Flexible Field Emitter for X-ray Generation by Implanting CNTs into Nickel Foil.

Sun B, Wang Y, Ding G - Nanoscale Res Lett (2016)

Photographs of a the developed sensitive plate and the Ni badge on it; the inset shows the magnitude of the Ni badge. b Magnitude of the blackened shadow
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4940312&req=5

Fig11: Photographs of a the developed sensitive plate and the Ni badge on it; the inset shows the magnitude of the Ni badge. b Magnitude of the blackened shadow
Mentions: Then, a Ni badge with a thickness of 100 μm and diameter of 3 mm was placed between the pin hole and the sensitive plate. The sensitive plate and the badge were exposed to the radiation under an applied voltage of 2.7 kV and emission current of 81 μA for 30 min to compensate for the X-ray energy loss. Figure 11 shows the X-ray transmission image of the Ni badge, and a fuzzy image was obtained at a relatively low applied voltage.Fig. 11

Bottom Line: By embedding CNT roots into Ni foil using polymer matrix as transfer media, effective direct contact between Ni and CNTs was achieved.As a result, our novel emitter shows relatively good field emission properties such as low turn-on field and good stability.The gray shadow that appears on the sensitive film after being exposed to the radiation confirms the successful generation of X-ray.

View Article: PubMed Central - PubMed

Affiliation: National Key Laboratory of Micro/Nano Fabrication Technology, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.

ABSTRACT
This paper reports a novel implanting micromachining technology. By using this method, for the first time, we could implant nano-scale materials into milli-scale metal substrates at room temperature. Ni-based flexible carbon nanotube (CNT) field emitters were fabricated by the novel micromachining method. By embedding CNT roots into Ni foil using polymer matrix as transfer media, effective direct contact between Ni and CNTs was achieved. As a result, our novel emitter shows relatively good field emission properties such as low turn-on field and good stability. Moreover, the emitter was highly flexible with preservation of the field emission properties. The excellent field emission characteristics attributed to the direct contact and the strong interactions between CNTs and the substrate. To check the practical application of the novel emitter, a simple X-ray imaging system was set up by modifying a traditional tube. The gray shadow that appears on the sensitive film after being exposed to the radiation confirms the successful generation of X-ray.

No MeSH data available.