Results 1 to 10 of about 1,131,346 (296)

High- and Ultra-High-Purity Aluminum, a Review on Technical Production Methodologies

open access: yesMetals, 2021
Aluminum and aluminum-based alloys have been used for many years. In view of the increase in material purity requirements of advanced technology products, research regarding high-purity aluminum has gained significant attention in recent years.
Dr Ing Dr h c Bernd Friedrich   +2 more
exaly   +2 more sources

High-temperature poling treatment of congruent ferroelectric LiNb0.5Ta0.5O3 solid solution single crystals [PDF]

open access: yesModern Electronic Materials, 2021
Lithium niobate and tantalate are among the most important and widely used materials of acoustooptics and acoustoelectronics. They have high piezoelectric constants enabling their use as actuators.
Anatolii A. Mololkin   +3 more
doaj   +3 more sources

The Electrophoretic Deposition of Nanopowders Based on Yttrium Oxide for Bulk Ceramics Fabrication

open access: yesInorganics, 2022
In the present work, a study was carried out to investigate the key factors that determine the uniformity, mass, thickness, and density of compacts obtained from nanopowders of solid solutions of yttrium and lanthanum oxides ((LaxY1−x)2O3) with the help ...
Elena Kalinina, Maxim Ivanov
doaj   +1 more source

Photoluminescence mechanism of carbon dots: triggering high-color-purity red fluorescence emission through edge amino protonation

open access: yesNature Communications, 2021
Due to complex structure and surface functionalities, photoluminescence mechanisms of Carbon Dots are unknown, and it is challenging to synthesize Carbon Dots to achieve the desired optical properties.
Qing Zhang   +4 more
semanticscholar   +1 more source

Changes in the Raman Spectrum of Monolayer Graphene under Compression/Stretching Strain in Graphene/Piezoelectric Crystal Structures

open access: yesNanomaterials, 2023
Results from studying the effect of an applied electric voltage on the Raman spectrum of graphene deposited on a lithium niobate crystal substrate with a ferroelectric domain structure are presented.
Artemy Irzhak   +4 more
doaj   +1 more source

Cascaded metasurfaces for high-purity vortex generation

open access: yesNature Communications, 2023
We introduce a new paradigm for generating high-purity vortex beams with metasurfaces. By applying optical neural networks to a system of cascaded phase-only metasurfaces, we demonstrate the efficient generation of high-quality Laguerre-Gaussian (LG ...
Feng Mei   +12 more
semanticscholar   +1 more source

Self-template synthesis of hollow flower-like NiCo2O4 nanoparticles as an efficient bifunctional catalyst for oxygen reduction and oxygen evolution in alkaline media

open access: yesNanotechnology Reviews, 2023
A method was proposed to synthesize hollow flower-like NiCo2O4 composed of porous nanosheets using a self-template approach. The unique structure is attributed to the synergistic effect of the Kirkendall effect and the Ostwald ripening mechanism.
Fu Lixiang   +5 more
doaj   +1 more source

Deformation mechanisms of a NiTi alloy under high cycle fatigue

open access: yesJournal of Materials Research and Technology, 2022
In this paper, high-cycle fatigue mechanisms of a pseudoelastic NiTi shape memory alloy (SMA) under different mean strains are investigated. The uni-axial cyclic tensile tests with small amplitude of 0.25% are operated at three different states, i.e ...
Junfeng Luo   +4 more
doaj   +1 more source

Isolation of high-purity and high-stability exosomes from ginseng

open access: yesFrontiers in Plant Science, 2023
Exosomes are nano-sized extracellular vesicles that regulate cell growth and defense by delivering bioactive cellular constituents. They are a promising material for biomedical and cosmetic utilization, especially in medicinal crops such as ginseng.
Ji-Hun Jang   +7 more
semanticscholar   +1 more source

Recent Achievements in Development of Chalcogenide Optical Fibers for Mid-IR Sensing

open access: yesFibers, 2023
Recent results of research of passive and active optical waveguides made of high-purity chalcogenide glasses for middle infrared fiberoptic evanescent wave spectroscopy of liquid and gaseous substances are presented.
Vladimir S. Shiryaev   +5 more
doaj   +1 more source

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