Results 1 to 10 of about 10,080,422 (214)

Research on Energy Conversion in the Arc-Extinguishing Process of a Long-Gap Gas Lightning-Protection Device

open access: yesEnergies, 2022
In this paper, a two-dimensional axisymmetric module of gas arc extinguishing was simulated using energy balance theories. We used simulation to study the energy distribution change during the gas arc-extinguishing process.
Qiwen He   +7 more
doaj   +1 more source

Characterization of Astaxanthin Nanoemulsions Produced by Intense Fluid Shear through a Self-Throttling Nanometer Range Annular Orifice Valve-Based High-Pressure Homogenizer

open access: yesMolecules, 2021
Stable, oil-in-water nanoemulsions containing astaxanthin (AsX) were produced by intense fluid shear forces resulting from pumping a coarse reagent emulsion through a self-throttling annular gap valve at 300 MPa.
Gary B. Smejkal   +4 more
doaj   +1 more source

Role of dislocations in nitride laser diodes with different indium content

open access: yesScientific Reports, 2021
In this work we investigate the role of threading dislocations in nitride light emitters with different indium composition. We compare the properties of laser diodes grown on the low defect density GaN substrate with their counterparts grown on sapphire ...
Agata Bojarska-Cieślińska   +6 more
doaj   +1 more source

Bidirectional light-emitting diode as a visible light source driven by alternating current

open access: yesNature Communications, 2023
Gallium nitride-based light-emitting diodes have revolutionized the lighting market by becoming the most energy-efficient light sources. However, the power grid, in example electricity delivery system, is built based on alternating current, which raises ...
Mikołaj Żak   +10 more
doaj   +1 more source

Plasmons in AlGaN/GaN grating-gate structure probing with 300 K background illumination

open access: yesAIP Advances, 2023
We show that terahertz plasmons in AlGaN/GaN grating-gate structures efficiently modulate the reflection of room temperature thermal radiation, leading to spectra that are in agreement with the measurements of plasmon absorption using high-power external
M. Dub   +8 more
doaj   +1 more source

Tunability of the spin reorientation transitions with pressure in NdCo5 [PDF]

open access: yes, 2020
We present pressure-dependent magnetization measurements carried out in the domain of the spin reorientation transitions (SRTs) of a NdCo5 single crystal. The application of a hydrostatic pressure leads to a shift in the SRTs to higher temperatures. This
Balakrishnan, Geetha   +5 more
core   +1 more source

The impact of point defects in n-type GaN layers on thermal decomposition of InGaN/GaN QWs

open access: yesScientific Reports, 2021
The aim of this paper is to give an experimental evidence that point defects (most probably gallium vacancies) induce decomposition of InGaN quantum wells (QWs) at high temperatures.
Mikolaj Grabowski   +10 more
doaj   +1 more source

Nano- and microsized heterodiamonds obtained from mixtures of carbon nitride and melamine with boron [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017
The paper presents experimental results of the synthesis under high pressure and temperature conditions of individual nano- and micron-sized heterodiamond crystals from mixtures of carbon nitride and melamine with boron.
V.P. Filonenko   +2 more
doaj   +1 more source

Sub-terahertz feedback interferometry and imaging with emitters in 130 nm BiCMOS technology

open access: yesScientific Reports, 2023
In this work, we present the effect of self-mixing in compact terahertz emitters implemented in a 130 nm SiGe BiCMOS technology. The devices are based on a differential Colpitts oscillator topology with optimized emission frequency at the fundamental ...
Dmytro B. But   +6 more
doaj   +1 more source

Enhancing reversibility of LiNi0.5Mn1.5O4 by regulating surface oxygen deficiency

open access: yesCarbon Energy, 2023
Oxygen deficiency has crucial effects on the crystal structure and electrochemical performance of spinel oxide lithium electrode materials such as LiNi0.5Mn1.5O4 (LNMO) cathode.
Dandan Wang   +8 more
doaj   +1 more source

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