Electrodeposition of Cesium for Efficient Explosive Emission Carbon Fiber Cathodes

Simimol, A.; Kumar, S. Prasanna; Das, M. K.; Alex, Aleena; Khandekar, Saket; Shanmuganathan, U.; Ravi, M.

doi:10.1109/tps.2019.2925817

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…β is the field enhancement factor related to the surface morphology, which reflects the ability of the emitters to enhance the local electric field. According to equation ( 3), the F-N equation can be rewritten in another form as follows [44]:…”

Section: Resultsmentioning

confidence: 99%

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Cold atmospheric pressure plasma jet prepares TiO₂ coating on carbon fibre for field emission and explosive electron emission

Zhiwei¹,

Ma²,

Liu³

et al. 2021

J. Phys. D: Appl. Phys.

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As the 'heart' of high-current vacuum electronic devices, explosive emission cathodes play an important role in their applications. In this work, a titanium dioxide (TiO 2 )/carbon fibre cathode prepared by a cold atmospheric plasma jet is reported. TiO 2 on the carbon fibre surface prepared by an atmospheric plasma jet is at the mixture of anatase and rutile phases. The field enhancement factor of the TiO 2 /carbon fibre cathode is 6681, which is over ten times higher than that of the carbon fibre cathode. Furthermore, the TiO 2 coating slows the diode impedance collapse and decreases the cathode plasma expansion velocity from 1.5-2.0 to 1.0-1.5 cm µs −1 , which is explained by a cathode plasma model. The surface of the TiO 2 /carbon fibre cathode is covered by 1.6 cm 2 plasma, far exceeding that of the carbon fibre cathode (1.1 cm 2 ), which enables uniform explosive electron emission. The obtained results show that TiO 2 /carbon fibre cathodes prepared by cold atmospheric plasma jets will be potential candidates as high-current explosive electron emitters.

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Section: Resultsmentioning

confidence: 99%

“…How the ions in plasma determine the plasma expansion velocity, v p , is a key issue in understanding why the TiO 2 coating can slow cathode plasma expansion. The relationship between v p and ion mass has been stated by Litvinov [44] as:…”

Section: Discussionmentioning

confidence: 99%

Cold atmospheric pressure plasma jet prepares TiO₂ coating on carbon fibre for field emission and explosive electron emission

Zhiwei¹,

Ma²,

Liu³

et al. 2021

J. Phys. D: Appl. Phys.

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Promoted field emission and cell attachment of TiO₂ nanorods/carbon fiber with hydrogen doping induced by cold atmospheric‐pressure Ar/H₂ plasma jet

Zhu

Yin

et al. 2021

Nano Select

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Cold atmospheric‐pressure plasma jet not only modifies surface morphology but also introduces functional groups on sample surfaces. In this work, TiO2 nanorods/carbon fiber (TNCF) is hydrothermally prepared, and hydrogen‐doped TNCF (H:TNCF) is obtained by the surface treatment of TNCF using cold atmospheric‐pressure Ar/H2 Plasma jet. H and OH spectral lines are observed from the emitting spectrum of atmospheric‐pressure Ar/H2 plasma jet. Nanoscaled protrusions appear at top of TiO2 nanorods after the surface treatment of cold atmospheric‐pressure Ar/H2 plasma jet. OH functional groups form on the surface of H:TNCF, based on the results of FTIR, Raman and XPS analysis. Furthermore, hydrogen doping can lower the band gap from 3.2 eV of TNCF to 2.9 eV of H:TNCF, and reduce the work function from 4.97 eV of TNCF to 4.71 eV of H:TNCF. Field emission property and cell compatibility of TNCF and H:TNCF are investigated. Field emission property of TNCF is considerably improved by hydrogen doping, due to a reduced work function and a higher field enhancement factor. In the cell attachment experiments, H:TNCF exhibits more attached cells with a larger cell attachment area, compared with the TNCF sample. The obtained results show H:TNCF prepared by hydrothermal method combined with cold atmospheric‐pressure Ar/H2 Plasma jet will be a promising candidate for field emission and biocompatibility applications.

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Structural, electrical and electron emission property studies of high dielectric constant (Pb0.88La0.12)(Zr0.65Ti0.35)O3 ceramics for ferroelectric cathode applications

Spandana

Reddy

Ravi

et al. 2023

Ceramics International

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Electrodeposition of Cesium for Efficient Explosive Emission Carbon Fiber Cathodes

Cited by 5 publications

References 24 publications

Cold atmospheric pressure plasma jet prepares TiO₂ coating on carbon fibre for field emission and explosive electron emission

Cold atmospheric pressure plasma jet prepares TiO₂ coating on carbon fibre for field emission and explosive electron emission

Promoted field emission and cell attachment of TiO₂ nanorods/carbon fiber with hydrogen doping induced by cold atmospheric‐pressure Ar/H₂ plasma jet

Structural, electrical and electron emission property studies of high dielectric constant (Pb0.88La0.12)(Zr0.65Ti0.35)O3 ceramics for ferroelectric cathode applications

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Electrodeposition of Cesium for Efficient Explosive Emission Carbon Fiber Cathodes

Cited by 5 publications

References 24 publications

Cold atmospheric pressure plasma jet prepares TiO2 coating on carbon fibre for field emission and explosive electron emission

Cold atmospheric pressure plasma jet prepares TiO2 coating on carbon fibre for field emission and explosive electron emission

Promoted field emission and cell attachment of TiO2 nanorods/carbon fiber with hydrogen doping induced by cold atmospheric‐pressure Ar/H2 plasma jet

Structural, electrical and electron emission property studies of high dielectric constant (Pb0.88La0.12)(Zr0.65Ti0.35)O3 ceramics for ferroelectric cathode applications

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Cold atmospheric pressure plasma jet prepares TiO₂ coating on carbon fibre for field emission and explosive electron emission

Cold atmospheric pressure plasma jet prepares TiO₂ coating on carbon fibre for field emission and explosive electron emission

Promoted field emission and cell attachment of TiO₂ nanorods/carbon fiber with hydrogen doping induced by cold atmospheric‐pressure Ar/H₂ plasma jet