Results 11 to 20 of about 391,637 (161)

Local Characterization of Field Emission Properties of Graphene Flowers

open access: yesAdvanced Electronic Materials, 2023
An experimental study about field emission properties of commercially available graphene flowers cloth is reported. Material characterization by means of X‐ray diffraction, Raman spectroscopy, and X‐ray photoemission spectroscopy confirms the formation ...
Filippo Giubileo   +7 more
doaj   +1 more source

Controllable synthesis of indium oxide nanorod‐flowers for high field emission performance

open access: yesMicro & Nano Letters, 2023
In this paper, indium oxide (In2O3) nanomaterials are successfully synthesized on the silicon substrates by hydrothermal method and calcination. By changing the ratio of raw materials, In2O3 exhibits three morphologies of nanorods, nanomaces, and nanorod‐
Yuechuan Hu   +5 more
doaj   +1 more source

Field Emission from the Perspective Cathodes on the Nanostructured SiC base: a New Approach for the Field Enhancement Coefficient Consideration

open access: yesФізика і хімія твердого тіла, 2022
A new comprehensive theory for the field emission from the nanostructured semiconducting SiC was built with allowance for specially worked out analytical model of the field enhancement coefficient for the case of comparatively “smooth” protrusions ...
А.М. Gariachko   +3 more
doaj   +1 more source

The Parameters of the Field Emission Model and the Fabrication of Zinc Oxide Nanorod Arrays/Graphene Film

open access: yesFrontiers in Physics, 2021
A large-scale growth of zinc oxide (ZnO) nanorod arrays on graphene sheets was fabricated by a hydrothermal technique, and the Fowler–Nordheim theory was used to build a model to describe the properties of the arrays’ field emission.
JianJun Yang   +6 more
doaj   +1 more source

Aluminum Nitride Ultraviolet Light-Emitting Device Excited via Carbon Nanotube Field-Emission Electron Beam

open access: yesNanomaterials, 2023
With the progress of wide bandgap semiconductors, compact solid-state light-emitting devices for the ultraviolet wavelength region are of considerable technological interest as alternatives to conventional ultraviolet lamps in recent years.
Yangcheng Yu   +11 more
doaj   +1 more source

Subtractive Low-Temperature Preparation Route for Porous SiO2 Used for the Catalyst-Assisted Growth of ZnO Field Emitters

open access: yesNanomaterials, 2021
The possibility to gradually increase the porosity of thin films facilitates a variety of applications, such as anti-reflective coatings, diffusion membranes, and the herein investigated tailored nanostructuring of a substrate for subsequent self ...
Stefanie Haugg   +3 more
doaj   +1 more source

Low-field emission of electrons by thin metal films: effect of composition, deposition conditions and morphology on emission capability of a film

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
The paper presents experimental study of the phenomenon of low-threshold field electron emission from thin films of several metals: Mo, W, Zr, Ni and Ti.
Bizyaev Ivan   +3 more
doaj   +1 more source

Miniaturized Wide-Range Field-Emission Vacuum Gauge

open access: yesNanomaterials and Nanotechnology, 2014
Miniaturized vacuum gauges (MVGs) for the measurement range 5.7x10-7 to 1.1x10-2 mbar were fabricated in a selfaligned approach using focused ion beam (FIB) nanomachining and reactive ion etching (RIE).
Amra Avdić   +3 more
doaj   +1 more source

Air Pressure, Gas Exposure and Electron Beam Irradiation of 2D Transition Metal Dichalcogenides

open access: yesApplied Sciences, 2020
In this study, we investigate the electrical transport properties of back-gated field-effect transistors in which the channel is realized with two-dimensional transition metal dichalcogenide nanosheets, namely palladium diselenide (PdSe2) and molybdenum ...
Antonio Di Bartolomeo   +4 more
doaj   +1 more source

Simulation and Optimization of CNTs Cold Cathode Emission Grid Structure

open access: yesNanomaterials, 2022
Carbon nanotubes (CNTs) show significant advantages in the development of cold cathode X-ray tubes due to their excellent field emission performance; however, there are still some problems, such as short lifetime and the low emission current of large ...
Yang Zhang   +4 more
doaj   +1 more source

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