Results 1 to 10 of about 3,084,963 (320)

Retention of high-pressure solution-processable metastable phase to ambience via differential sublattice rigidity for broadband photodetectors [PDF]

Nature Communications
Materials science exploits only properties that are available at ambience. Therefore, although high-pressure changes the physical state of all condensed matter, most of the extraordinary properties discovered vanish after decompression and cannot be ...
Zhongyang Li, Jue Gong, Zhikai Zhu, Donghao Liu, Qingyang Hu, Yiming Wang, Xuqiang Liu, Shuo Zhou, Hui Luo, Dong Wang, Xingyi Liu, Zengxi Yang, Min Tang, Qingyu Kong, N-Diaye Adama, Kai Zhang, Shuai Yan, Lili Zhang, Xiaohui Zeng, Zhenhai Yu, Wei Xia, Jian Yuan, Mingtao Li, Nana Li, Hongliang Dong, Ziyou Zhang, Haiyun Shu, Yang Ding, Dongbo Wang, Yanfeng Guo, Tao Xu, Lingping Kong, Wenge Yang, Ho-kwang Mao, Gang Liu   +34 more
doaj   +2 more sources

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

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, Jufeng Wang, Yang Lu, Yongfeng Song, Zhenghao Jia, Hao Li, Yanlei Wang, Yiyi Zhang   +7 more
doaj   +1 more source

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, Łucja Marona, Julita Smalc-Koziorowska, Szymon Grzanka, Jan Weyher, Dario Schiavon, Piotr Perlin   +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, Grzegorz Muziol, Marcin Siekacz, Artem Bercha, Mateusz Hajdel, Krzesimir Nowakowski-Szkudlarek, Artur Lachowski, Mikołaj Chlipała, Paweł Wolny, Henryk Turski, Czesław Skierbiszewski   +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, D. B. But, P. Sai, Yu. Ivonyak, M. Słowikowski, M. Filipiak, G. Cywinski, W. Knap, S. Rumyantsev   +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, Ewa Grzanka, Szymon Grzanka, Artur Lachowski, Julita Smalc-Koziorowska, Robert Czernecki, Roman Hrytsak, Joanna Moneta, Grzegorz Gawlik, Andrzej Turos, Mike Leszczyński   +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, I.P. Zibrov, A.S. Anokhin   +2 more
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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, Kȩstutis Ikamas, Cezary Kołaciński, Aleksandr V. Chernyadiev, Domantas Vizbaras, Wojciech Knap, Alvydas Lisauskas   +6 more
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The near-room-temperature upsurge of electrical resistivity in Lu-H-N is not superconductivity, but a metal-to-poor-conductor transition

Matter and Radiation at Extremes, 2023
The recent report of superconductivity in nitrogen-doped lutetium hydride (Lu-H-N) at 294 K and 1 GPa brought hope for long-sought-after ambient-condition superconductors.
Di Peng, Qiaoshi Zeng, Fujun Lan, Zhenfang Xing, Yang Ding, Ho-kwang Mao   +5 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