Results 11 to 20 of about 9,308 (245)

Parametrically Optimized Carbon Nanotube-Coated Cold Cathode Spindt Arrays [PDF]

open access: yesNanomaterials, 2017
Here, we investigate, through parametrically optimized macroscale simulations, the field electron emission from arrays of carbon nanotube (CNT)-coated Spindts towards the development of an emerging class of novel vacuum electron devices.
Xuesong Yuan   +5 more
doaj   +2 more sources

Characteristics of Carbon Nanotube Cold Cathode Triode Electron Gun Driven by MOSFET Working at Subthreshold Region [PDF]

open access: yesNanomaterials
The carbon nanotube cold cathode has important applications in the X-ray source, microwave tube, neutralizer, etc. In this study, the characteristics of carbon nanotube (CNT) electron gun in series with metal-oxide-semiconductor field-effect transistor ...
Yajie Guo   +4 more
doaj   +2 more sources

Development of an Amorphous Selenium-Based Photodetector Driven by a Diamond Cold Cathode [PDF]

open access: yesSensors, 2013
Amorphous-selenium (a-Se) based photodetectors are promising candidates for imaging devices, due to their high spatial resolution and response speed, as well as extremely high sensitivity enhanced by an internal carrier multiplication.
Tatsuo Shimosawa   +14 more
doaj   +2 more sources

A nano-graphite cold cathode for an energy-efficient cathodoluminescent light source [PDF]

open access: yesBeilstein Journal of Nanotechnology, 2013
The development of new types of light sources is necessary in order to meet the growing demands of consumers and to ensure an efficient use of energy. The cathodoluminescence process is still under-exploited for light generation because of the lack of ...
Alexander N. Obraztsov   +2 more
doaj   +2 more sources

Development of a Cold Cathode Electron Source Based on Gold Cathode MCP [PDF]

open access: yesZhipu Xuebao, 2023
In this study, cold cathode electron sources using deep-UV photons to excite gold cathode and microchannel plate (MCP) were employed to configure a high-quality electron impact ion source (EI) in a mass spectrometry.
YAO Wen-jing1   +6 more
doaj   +1 more source

Numerical Simulation of the Cold-Start Process of Polymer Electrolyte Fuel Cell

open access: yesEnergies, 2023
In this study, the cold-start process of a polymer electrolyte fuel cell has been numerically investigated under various ambient temperatures and operating currents, ranging from subzero to 283 K.
Yazhou Chen   +4 more
doaj   +1 more source

Analysis of electron emission characteristics of triggered vacuum switch based on cold cathode materials

open access: yesAIP Advances, 2022
A trigger vacuum switch that works for a long time is subject to the stable emission of initial electrons. Cold cathode materials such as velvet and carbon fiber have the characteristics of large emission electron area, uniformity, and stability. In this
Jilu Xia   +4 more
doaj   +1 more source

Ti–6Al–4V alloy deposition characteristics at electrode-negative polarity in the cold metal transfer–gas metal arc process

open access: yesJournal of Materials Research and Technology, 2022
Although wire arc additive manufacturing (WAAM) of Ti alloys using gas metal arc yields a high deposition rate, cathode spots exhibit unstable behavior.
Tae Hyun Lee   +3 more
doaj   +1 more source

Investigation of gas purging and cold storage impact on PEM fuel cell system performance for aeronautical applications [PDF]

open access: yesE3S Web of Conferences, 2022
Durability of proton exchange membrane fuel cell systems under cold weather conditions is essential and a critical challenge for transportation applications.
Montaner Ríos Gema   +4 more
doaj   +1 more source

Cold Cathodes with Two-Dimensional van der Waals Materials

open access: yesNanomaterials, 2023
Two-dimensional van der Waals materials could be used as electron emitters alone or stacked in a heterostructure. Many significant phenomena of two-dimensional van der Waals field emitters have been observed and predicted since the landmark discovery of ...
Yicong Chen, Jun Chen, Zhibing Li
doaj   +1 more source

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