Results 1 to 10 of about 390,595 (315)

Effect of Piezoresistive Behavior on Electron Emission from Individual Silicon Carbide Nanowire [PDF]

open access: yesNanomaterials, 2019
The excellent properties of silicon carbide (SiC) make it widely applied in high-voltage, high-power, and high-temperature electronic devices. SiC nanowires combine the excellent physical properties of SiC material and the advantages of nanoscale ...
Peng Zhao   +7 more
doaj   +2 more sources

Ultralow Secondary Electron Emission of Graphene

open access: yesACS Nano, 2011
In order to ensure that vacuum electronic devices work with high overall efficiency, it is required to use materials with low secondary electron emission to fabricate or coat collectors, grids, and envelope walls of the devices. We report that the secondary electron yields of monolayer graphenes are ultralow, comparable with the lowest yields of the ...
Peng Tian   +2 more
exaly   +4 more sources

The analysis of features of occurrence of inertial explosion in problems of high-speed impact of metal penetrators into the studied celestial body and meteor-technogenic particles into elements of spacecraft [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2022
The article discusses the features of the occurrence of an inertial explosion (IE) in the problems of high-speed impacts on a solid barrier of two types of impactors: metal penetrators into the studied celestial body for space contact scientific ...
E. V. Leun   +3 more
doaj   +1 more source

Preparation and emission performance of tungsten-osmium mixed matrix dispenser cathode by microwave sintering

open access: yesFenmo yejin jishu, 2023
Submicron tungsten-osmium mixed powders with the different content of Os (atomic number fraction) were prepared by solid‒liquid mixing method. The tungsten-osmium mixed matrix disperser cathodes with the uniform pore structure were obtained by microwave ...
LIU Wei   +7 more
doaj   +1 more source

Electron emission projection imager [PDF]

open access: yesReview of Scientific Instruments, 2017
A new projection type imaging system is presented. The system can directly image the field emission site distribution on a cathode surface by making use of anode screens in the standard parallel plate configuration. The lateral spatial resolution of the imager is on the order of 1–10 μm.
Baturin, Stanislav S.   +1 more
openaire   +3 more sources

Photo-induced Electron Emission of Nanostructured Carbon Thin Film Based Transmission Photocathodes at Different Electric Field

open access: yesAdvances in Electrical and Electronic Engineering, 2022
Very thin nanostructured carbon films were deposited on quartz substrate by reactive magnetron sputtering using graphite target and gas mixture of Ar and reactive gas N_2 or N_2+H_2. Film thicknesses were in the range of 20-25 nm.
Jozef Huran   +5 more
doaj   +1 more source

Electron Spectroscopy of Charge Exchange Effects in Low Energy Ion Scattering at Surfaces: Case Studies of Heavy Ions at Al Surface

open access: yesSurfaces, 2023
This work discusses studies of electron emissions during the interaction of low energy (in the keV energy range and below) singly charged ions with Aluminum surfaces.
Pierfrancesco Riccardi
doaj   +1 more source

Research progress in carbon nitride in field emission cold cathode materials

open access: yesCailiao gongcheng, 2022
Carbon nitride has the advantages of excellent thermal stability, high thermal conductivity, larger forbidden band width and negative electron affinity. Therefore, carbon nitride is a promising field emission cathode material. On the basis of introducing
XIAO Haochun, FENG Yibing, WANG Jigang
doaj   +1 more source

Coherent control at gold needle tips approaching the strong-field regime

open access: yesNanophotonics, 2021
We demonstrate coherent control in photoemission from a gold needle tip using an ω − 2ω field composed of strong few-cycle laser pulses with a nearfield intensity of ∼4 TW/cm2.
Dienstbier Philip   +2 more
doaj   +1 more source

Field electron emission of double walled carbon nanotube film prepared by drop casting method [PDF]

open access: yes, 2007
Thick films of double walled carbon nanotubes (DWCN) were deposited on indium-tin-oxide (ITO) coated glass substrates by drop casting method and were studied for their field electron emission property in a parallel plate configuration using bare ITO ...
Flahaut, Emmanuel   +5 more
core   +1 more source

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