Field Emission Cathode-Based Devices and Equipment

Егоров, Н. В.; Sheshin, E.P.

doi:10.1007/978-3-319-56561-3_8

Cited by 3 publications

(1 citation statement)

References 58 publications

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“…Electrons are emitted as soon as the electric eld is applied and consequently, this process has a fast switch-on time 11 . Nowadays, researchers are working in cold cathode eld emission materials due to many applications such as microwave power ampli ers space technology, extreme ultraviolet (EUV) and UVC light, crystallization of amorphous materials, electron microscopy, and X-ray source technology [12][13][14][15][16][17] . It has many advantages as compared to the forest-type CNT emitter.…”

Section: Introductionmentioning

confidence: 99%

Optimization of vertically aligned carbon nanotube beam trajectory with the help of focusing electrode in the microchannel plate

Adhikari

Bhotkar

Patil

et al. 2023

Preprint

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The focusing electrode plays an important role to reduce the electron beam trajectory with low dispersion and high brightness. This article summarizes the importance of the vertically aligned multi-walled carbon nanotube effect with the focusing electrode. First of all, the effect of electron beam trajectory is studied with the different heights, hole sizes, and applied voltage of the focusing electrode by the opera 3D simulation. The field emission electron beam spot is captured in the microchannel plate which helps to reduce the signal noise effect and damage of CNT tips by the joule heating effect. The high-dense bright spot is optimized at the focusing electrode hole size of 2 mm, and the height of 1 mm from the gate mesh electrode at the low bias voltage of -200 V without the loss of current. The FWHM of the electron beam is calculated 0.9 mm with its opening angle of 0.90 which could be applicable in high-resolution multi-electron beam microscopy and nano-focused X-ray system technology.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimization of vertically aligned carbon nanotube beam trajectory with the help of focusing electrode in the microchannel plate

Adhikari

Bhotkar

Patil

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Optimization of vertically aligned carbon nanotube beam trajectory with the help of focusing electrode in the microchannel plate

Adhikari,

Ketan,

Patil

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The focusing electrode plays an important role to reduce the electron beam trajectory with low dispersion and high brightness. This article summarizes the importance of the vertically aligned multi-walled carbon nanotube effect with the focusing electrode. First of all, the effect of electron beam trajectory is studied with the different heights, hole sizes, and applied voltage of the focusing electrode by the opera 3D simulation. The field emission electron beam spot is captured in the microchannel plate which helps to reduce the signal noise effect and damage of CNT tips by the joule heating effect. The high-dense bright spot is optimized at the focusing electrode hole size of 2 mm, and the height of 1 mm from the gate mesh electrode at the low bias voltage of − 200 V without the loss of current. The FWHM of the electron beam is calculated 0.9 mm with its opening angle of 0.9° which could be applicable in high-resolution multi-electron beam microscopy and nano-focused X-ray system technology.

show abstract