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Attosecond field emission. [PDF]

open access: yesNature, 2023
AbstractField emission of electrons underlies great advances in science and technology, ranging from signal processing at ever higher frequencies1 to imaging of the atomic-scale structure of matter2 with picometre resolution. The advancing of electron microscopy techniques to enable the complete visualization of matter on the native spatial (picometre)
Kim HY   +5 more
europepmc   +4 more sources

Investigation of Influencing Factors on the Measurement Signal of a CMOS Image Sensor for Measuring Field Emission Currents [PDF]

open access: yesSensors
We use optical CMOS image sensors for spatially and time-resolved measurement of the emission currents of field emission cathodes. The measured signal depends, on the one hand, on the emission current that flows from the cathode surface through the ...
Matthias Hausladen   +8 more
doaj   +2 more sources

Field Emission from Carbon Nanostructures [PDF]

open access: yesApplied Sciences, 2018
Field emission electron sources in vacuum electronics are largely considered to achieve faster response, higher efficiency and lower energy consumption in comparison with conventional thermionic emitters.
Filippo Giubileo   +4 more
doaj   +2 more sources

Thermal-Assisted Field Emission Characteristics of Carbon Nanotubes and Application in Pulsed X-Ray Imaging [PDF]

open access: yesNanomaterials
Carbon nanotube (CNT) cathode materials exhibit excellent electron emission performance and have become a key research focus in the field of vacuum electronics.
Zhiqiang Xia   +5 more
doaj   +2 more sources

Investigation of Field Emission Properties of Carbon Nanotube Arrays of Different Morphologies [PDF]

open access: yesNanomaterials
This article presents, for the first time, a comparative analysis of the emission characteristics of large-area field-effect cathodes (LAFE) based on carbon nanotubes (CNTs) of various morphologies according to key parameters using a unique computerized ...
Maksim A. Chumak   +6 more
doaj   +2 more sources

A Study on the Field Emission Characteristics of High-Quality Wrinkled Multilayer Graphene Cathodes [PDF]

open access: yesNanomaterials
Field emission (FE) necessitates cathode materials with low work function and high thermal and electrical conductivity and stability. To meet these requirements, we developed FE cathodes based on high-quality wrinkled multilayer graphene (MLG) prepared ...
Wenmei Lv   +8 more
doaj   +2 more sources

Correlation between electric parameters of carbon layers and their capacity for field emission

open access: yesJournal of Telecommunications and Information Technology, 2023
The aim of this work is to study a possibility of field electron emission from carbon layers produced by radio frequency plasma chemical vapor deposition (RF PCVD) method.
Ryszard Gronau   +2 more
doaj   +1 more source

Stable Field Emission from Vertically Oriented SiC Nanoarrays

open access: yesNanomaterials, 2021
Silicon carbide (SiC) nanostructure is a type of promising field emitter due to high breakdown field strength, high thermal conductivity, low electron affinity, and high electron mobility.
Jianfeng Xiao   +9 more
doaj   +1 more source

Multilayer field emitters on a thin metal substrate [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2020
The purpose of this work is to determine the ability of creating multilayer cathodes from contacted materials with different work functions ef on thin metal substrates, as well as the practical use of such cathodes for the formation of intense sheet and ...
Sominskii, G. G.   +1 more
doaj   +1 more source

Optimization of a Field Emission Electron Source Based on Nano-Vacuum Channel Structures

open access: yesMicromachines, 2022
Recent discoveries in the field of nanoscale vacuum channel (NVC) structures have led to potential on-chip electron sources. However, limited research has reported on the structure or material parameters, and the superiority of a nanoscale vacuum channel
Ji Xu   +6 more
doaj   +1 more source

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