Curvature correction to the field emission current
نویسندگان
چکیده
منابع مشابه
Calculating the Field Emission Current from a Carbon Nanotube
The purpose of this work is to present elements of a design tool for field emission displays using carbon nanotubes as emitters. We use a continuum model to describe the carbon nanotubes and we use a locally one-dimensional approximation to calculate the emission current. We investigate the emission current to voltage characteristic, screening effects and the lateral spread of the emission curr...
متن کاملField emission and current-voltage properties of boron nitride nanotubes
We have measured electrical transport properties of boron nitride nanotubes using an in situ manipulation stage inside a transmission electron microscope. Stable currents were measured in a field emission geometry, but in contact the nanotubes are insulating at low bias. At high bias, the nanotubes show stable, reversible breakdown current. q 2003 Published by Elsevier Ltd.
متن کاملSimulation of Field-emission Cathodes for High Current Electron Injectors
From the prospect of the high average current electron injectors, the most important advantage of the fieldemission cathodes is their capability to generate very large current densities. Simulation of field-emission cathodes is complicated by the large range of spatial dimensions: from sub-micron scale, for a single field-emission tip, to millimeter scale, for a field-emitter array. To overcome...
متن کاملField emission current limits of patches with cylindrical gold nanowires
Based on the field emission (FE) results achieved with regular test arrays of gold [1] and platinum [2] nanowire (NW) patches, FE cathodes (Ø 5 mm) with a triangular patch array (Ø 150 μm, pitch 320 μm) of cylindrical AuNW (10 cm, Ø 200 nm, length 12 μm) were fabricated by means of a shadow mask during heavy ion irradiation of polycarbonate foils. The emitter distribution and local properties o...
متن کاملField Emission Dark Current of Technical Metallic Electrodes
In the framework of the Low Emittance Gun (LEG) project, high gradient acceleration of a low emittance electron beam will be necessary. In order to achieve this acceleration a-500 kV, 250 ns FWHM, pulse will be applied in between two electrodes. Those electrodes should sustain the pulsed field without arcing, must not outgass and must not emit electrons. Ion back bombardment, and dark current w...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Vacuum Science & Technology B
سال: 2019
ISSN: 2166-2746,2166-2754
DOI: 10.1116/1.5064403