Results 111 to 120 of about 1,018,400 (245)
Back bombardment for dispenser and lanthanum hexaboride cathodes
Physical Review Special Topics. Accelerators and Beams, 2011 The back bombardment (BB) effect limits wide usage of thermionic rf guns. The BB effect induces not only ramping-up of a cathode’s temperature and beam current, but also degradation of cavity voltage and beam energy during a macropulse.
Mahmoud Bakr +13 more
doaj +1 more source
physica status solidi (RRL) – Rapid Research Letters, Volume 19, Issue 5, May 2025.This study presents a photodetector based on atomically thin MoS2 on an InP substrate, forming an n‐MoS2/p‐InP type‐II staggered heterojunction. The device exhibits excellent rectifying properties with an ideality factor of 1.57 and achieves a peak photoresponsivity of 960 mA W−1, while MoS2 provides stable passivation for InP. III–V semiconductors are
Dong Hwi Choi +8 more
wiley +1 more source
Hot Electron Emission in Plasmonic Thermionic Converters
, 2019 Thermionic converters generate electricity from thermal energy in a power cycle based on the vacuum emission of electrons. While thermodynamically efficient, practical implementations are limited by the extreme temperatures required for electron emission
Matthew Sheldon (2801944) +2 more
core +1 more source
Acid Resistant and Highly Silver Selective Membranes Based on Charged Nanoporous 2D‐Materials
Small, EarlyView.In this work, new membranes based on charged & nanoporous nanosheets with unprecedented selectivity to silver versus a wide range of other metallic ions are reported. Furthermore, a demonstrated and lead specific intralamellar lead pathway is demonstrated. A potential applicability for ubiquitous silver in WEEE is validated.
Sarah M. Chevrier +6 more
wiley +1 more source
Small, EarlyView.This study reports a self‐powered broadband photodetector based on compositionally tuned p‐(CuS)x(ZnSe)1−x/p‐Si isotype heterojunctions. Increasing the CuS ratio improved the film crystallinity and produced a denser, more homogeneous nanopillar morphology, enhancing light absorption.
Ali Olkun
wiley +1 more source
Low-emittance thermionic-gun-based injector for a compact free-electron laser
Physical Review Accelerators and Beams, 2017 A low-emittance thermionic-gun-based injector was developed for the x-ray free-electron laser (XFEL) facility known as the SPring-8 angstrom compact free-electron laser (SACLA).
Takao Asaka +19 more
doaj +1 more source
steel research international, EarlyView.This work uses high‐temperature dilatometry to examine how the tramp elements Cu, Ni, and Sn affect the deformability of non‐metallic inclusions and matrix in quench‐and‐temper steel. Mg‐bearing inclusions deform less than Mg‐free ones. Copper lowers formability. Nickel increases deformability.
Julian Cejka +3 more
wiley +1 more source
High Voltage, EarlyView.ABSTRACT For designing aeronautical components, the creepage distance is usually estimated by considering the pollution level and the dielectric material group as defined by the standard IEC 60664‐1. The material group is expressed by the comparative tracking index (CTI) performed at atmospheric pressure following the standard IEC 60112.
Somya Anand +4 more
wiley +1 more source
Thermionic Emission of Diamond Using Laser as a Heat Source
, 2007 Preliminary experimentation shows diamond emits electrons at high temperature through a phenomenon known as thermionic emission. This thesis details an experiment to quantify the thermionic emission of a diamond on silicon vacuum cathode at high ...
Davis, Ian Ly
core
Angewandte Chemie, Volume 138, Issue 40, 28 September 2026.Despite its promise for producing metastable materials, the mechanisms underlying solid‐state microwave synthesis remain poorly understood. By combining in situ thermography with x‐ray diffraction and solid‐state NMR, this study uncovers a surprising order–disorder–order reaction pathway during the microwave synthesis of the Li1.1Mn0.9O1.9F0.1${\rm Li ...
Erick A. Lawrence +8 more
wiley +2 more sources