Results 11 to 20 of about 314,600 (315)

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

Investigations of electron emission from DLC thin films deposited by means of RF PCVD at various self-bias voltages

open access: yesJournal of Telecommunications and Information Technology, 2023
The aim of this paper is to report the results of field emission experiments on undoped, flat diamond-like carbon (DLC) thin films deposited at various self-bias voltages using radio frequency plasma chemical vapor deposition (RF PCVD) technique. It has
Dagmara Jarzyńska   +3 more
doaj   +1 more source

General scaling laws of space charge effects in field emission

open access: yesNew Journal of Physics, 2021
The characteristics of field electron and ion emission change when the space charge formed by the emitted charge is sufficient to suppress the extracting electric field. This phenomenon is well described for planar emitting diodes by the one dimensional (
A Kyritsakis, M Veske, F Djurabekova
doaj   +1 more source

FIELD ELECTRON EMISSION FROM NANOSTRUTURED SURFACE OF CARBONIZED IRIDIUM

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
The characteristics of the field electron emission of the iridium tip with different carbon formations on its surface are investigated. It was found that in some cases, compared to metal emitters the carbon-coated emitter exhibits significantly greater ...
D.P. Bernatskii, V.G. Pavlov
doaj   +1 more source

Far Off Equilibrium Dynamics in Clusters and Molecules

open access: yesFrontiers in Physics, 2020
This brief review illustrates on a few typical applications fully fledged dynamical simulations of finite electronic systems (atoms, molecules, clusters) using time-dependent density-functional theory (TDDFT).
Phuong Mai Dinh   +4 more
doaj   +1 more source

Field-emission electron gun for a MEMS electron microscope

open access: yesMicrosystems & Nanoengineering, 2021
This article presents a field-emission electron gun intended for use in a MEMS (microelectromechanical system) electron microscope. Its fabrication process follows the technology of a miniature device under development built from silicon electrodes and ...
Michał Krysztof
doaj   +1 more source

Thermionic and Photo-excited Electron Emission for Energy Conversion Processes

open access: yesFrontiers in Energy Research, 2014
This article describes advances in thermionic and photoemission materials and applications dating back to the work on thermionic emission by Guthrie in 1873 and the photoelectric effect by Hertz in 1887. Thermionic emission has been employed for electron
Patrick T. McCarthy   +2 more
doaj   +1 more source

DIGITAL APPROACH TO THERMIONIC EMISSION CURRENT TO VOLTAGE CONVERSION FOR HIGH-VOLTAGE SOURCES OF ELECTRONS

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
The thermionic emission current is used in many vacuum devices such as evaporators, rare gas excimers, or electron beam objects for high-energy physics. The stability of the thermionic emission current is a very important requirement for the accuracy of
Bartosz Kania
doaj   +1 more source

Fabrication of Stable Carbon Nanotube Cold Cathode Electron Emitters with Post-Growth Electrical Aging

open access: yesMicromachines, 2018
We fabricated carbon nanotube (CNT) cold cathode emitters with enhanced and stable electron emission properties and long-time stability with electrical aging as a post-treatment.
Jung Hyun Kim   +2 more
doaj   +1 more source

Broadband Electromagnetic Emission from PZT Ferroelectric Ceramics after Shock Loading

open access: yesMedžiagotyra, 2013
It was experimentally registered pulsed electromagnetic (EM) radiation in frequency range higher than television one using wideband horns with coaxial and waveguide outputs.
Fiodoras ANISIMOVAS   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy