Results 21 to 30 of about 11,554 (146)

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

Anode and cathode arc root movement during contact opening at high current [PDF]

open access: yes, 1999
This paper presents experimental research into the behavior of short circuit break arcs ignited between opening contacts. The investigation is applied to arc chamber geometries commonly used in miniature circuit breakers (MCB).
Peter A. Jeffery   +3 more
core   +1 more source

Effect of chemically modified Vulcan XC-72R on the performance of air-breathing cathode in a single-chamber microbial fuel cell [PDF]

open access: yes, 2010
The catalytic activity of modified carbon powder (VulcanXC-72R) for oxygen reduction reaction (ORR) in an air-breathingcathode of amicrobialfuelcell (MFC) has been investigated.
Ghangrekar, Makarand Madhao   +4 more
core   +1 more source

Maximizing the Field Emission Performance of Graphene Arrays

open access: yesNanomaterials, 2020
To design efficient and powerful field emission cathodes, the screening effect is of great importance and should be traded off between screening and emitter number.
Kaiqiang Yang   +7 more
doaj   +1 more source

Cold cathode investigation [PDF]

open access: yes, 1975
Experiments for the evaluation of a cold cathode electron gun are described. Different anode and cathode materials and configurations were tried. Small signal gains of 6.3 percent/cm were measured.
Rink, J.P.
core   +1 more source

Theoretical Study of a 0.22 THz Backward Wave Oscillator Based on a Dual-Gridded, Carbon-Nanotube Cold Cathode

open access: yesApplied Sciences, 2018
The carbon nanotube (CNT) cold cathode is an attractive choice for millimeter and terahertz vacuum electronic devices owning to its unique instant switch-on and high emission current density.
Qingyun Chen   +5 more
doaj   +1 more source

Virtual cathode emission of an annular cold cathode

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2009
Recent measurement of voltage V and current I of the electron gun of a relativistic klystron amplifier revealed that the resulting current-voltage relationship appeared to differ from the usual Child-Langmuir law (I∝V^{3/2}) especially during the initial
S.-d. Park   +7 more
doaj   +1 more source

Tunable Broadband Photoresponse Electron‐Emission Nanostructure: Metasurface‐Extended Spectrum‐Selecting and Plasmon‐Enhanced Emitting

open access: yesAdvanced Photonics Research, 2022
Exploring novel nanotechnology schemes for tunable broadband vacuum photodetection devices is of great significance. Herein, a strategy to combine a field‐emission cold cathode with plasmonic nanostructures to form a plasmon‐enhanced field‐emission ...
Yan Shen   +4 more
doaj   +1 more source

Checking graphite and stainless anodes with an experimental model of marine microbial fuel cell. [PDF]

open access: yes, 2008
A procedure was proposed to mimic marine microbial fuel cell (MFC) in liquid phase. A graphite anode and a stainless steel cathode which have been proven, separately, to be efficient in MFC were investigated.
Basséguy, Régine   +11 more
core   +1 more source

Investigation of Spindt Cold Cathode Electron Guns for Terahertz Traveling Wave Tubes

open access: yes, 2023
In this work, a Spindt cold cathode electron gun with a PPM (periodic permanent magnet) focusing system for a terahertz TWT (traveling wave tube) was designed and simulated based on the Pierce electron gun structure.
Jinjun Feng, Yongtao Li, Hanyan Li
core   +1 more source

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