Energies, 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
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Role of dislocations in nitride laser diodes with different indium content
Scientific 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
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Bidirectional light-emitting diode as a visible light source driven by alternating current
Nature 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
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Plasmons in AlGaN/GaN grating-gate structure probing with 300 K background illumination
AIP 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
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The impact of point defects in n-type GaN layers on thermal decomposition of InGaN/GaN QWs
Scientific 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
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Nano- and microsized heterodiamonds obtained from mixtures of carbon nitride and melamine with boron [PDF]
Физико-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
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Phase transition mechanism and bandgap engineering of Sb2S3 at gigapascal pressures
Communications Chemistry, 2021 Antimonite (Sb2S3) has potential applications for solar energy, but how its layered structure changes under pressure is incompletely understood. Here diamond anvil cell experiments supported by first principles calculations offer a structural explanation
Zhongxun Cui +9 more
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Magnetism in four-layered Aurivillius Bi$_5$FeTi$_3$O$_{15}$ at high pressures : A nuclear forward scattering study [PDF]
J. Magn. Magn. Mater., 562 (2022) 169783, 2022 We report the structural and magnetic properties of four-layer Aurivillius compound Bi$_5$FeTi$_3$O$_{15}$ (BFTO) at high hydrostatic pressure conditions. The high-pressure XRD data does not explicitly show structural phase transitions with hydrostatic pressure, however the observed changes in lattice parameters indicate structural modifications at ...
arxiv +1 more source
Sub-terahertz feedback interferometry and imaging with emitters in 130 nm BiCMOS technology
Scientific 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
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Room-Temperature Synthesis of Tubular Hexagonal Boron Nitride under Pressure
Crystals, 2023 Hexagonal boron nitride (h-BN) exhibits interesting optical and mechanical properties, including chemical and thermal stability. Extensive techniques have been applied for the realization of h-BN at high temperatures.
Junkai Li +4 more
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