Results 211 to 220 of about 12,953 (259)
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Tungsten oxide polymorphs and their multifunctional applications
Advances in Colloid and Interface Science, 2022Owing to the natural abundance, easy availability, high stability, non-stoichiometry, and chemical diversity, considerable interest has been devoted to tungsten oxide (WO3-x) nanomaterials, and many advances have been achieved ranging from traditional catalysts and electronics to emerging artificial intelligence.
Mingxin, Zhang +6 more
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Oxidation of tungsten nanoclusters
Thin Solid Films, 2003Abstract The tungsten oxide nanoclusters were prepared by oxidation of epitaxialy grown tungsten thin film. The structure and morphology of tungsten and tungsten oxide nanoclusters were determined by RHEED (Reflection High-Energy Electron Diffraction) and AFM (Atomic Force Microscopy).
M. Gillet, K. Mašek, C. Lemire
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Seed Growth of Tungsten Diselenide Nanotubes from Tungsten Oxides
Small, 2015We report growth of tungsten diselenide (WSe2) nanotubes by chemical vapor deposition with a two‐zone furnace. WO3nanowires were first grown by annealing tungsten thin films under argon ambient. WSe2nanotubes were then grown at the tips of WO3nanowires through selenization via two steps: (i) formation of tubular WSe2structures on the outside of ...
Hyun, Kim +6 more
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Tungsten Oxide Materials for Optoelectronic Applications
Advanced Materials, 2016Tungsten oxide is a versatile transition‐metal oxide with a vast number of polymorphs and sub‐stoichiometric compositions, featuring innate tunnels and oxygen vacancies. The structure‐determined nature, such as altered optical absorption and metal‐like conductivity, makes tungsten oxide an attractive candidate for optoelectronic applications.
Shan, Cong, Fengxia, Geng, Zhigang, Zhao
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Tungsten Oxide Resistive Memory Using Rapid Thermal Oxidation of Tungsten Plugs
Japanese Journal of Applied Physics, 2010A complementary metal oxide semiconductor (CMOS)-compatible WO x based resistive memory has been developed. The WO x memory layer is made from rapid thermal oxidation of W plugs. The device performs excellent electrical properties. The switching speed is extremely fast
Erh-Kun Lai +17 more
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Controlled Electrodeposition of Nanoparticulate Tungsten Oxide
Nano Letters, 2002Nanoparticulate tungsten oxide films were synthesized by pulsed electrodeposition. Particle sizes between 45 and ∼330 nm were achieved by varying pulse duration from 5 to 500 ms. Shorter pulses increased the rate of new particle nucleation above the rate of existing particle growth, allowing for the observed variations in size.
Baeck, S. H. +3 more
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Tungsten oxides as catalysts in selective oxidation
Journal of Catalysis, 1983Abstract The reaction of allyl iodide was studied at the surface of four tungsten oxides and molybdenum trioxide. On WO2.95 and MoO3, in which crystallographic shear structures are formed on reduction, acrolein is produced at 300–400 °C, whereas W18O49 and WO2, which do not show this property, are inactive, as is WO3.
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`β-Tungsten' as a tungsten oxide
Acta Crystallographica, 1954G. Hägg, N. Schönberg
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The effect of oxidation state of tungsten on hydrocracking of n-heptane over tungsten oxide
Journal of Catalysis, 1973Abstract Hydrocracking of n-heptane was investigated with tungsten oxide of various oxidation states under high pressure of hydrogen. It was found that the reaction products definitely change four times with changing oxidation state during the course of reduction of tungsten trioxide. In the presence of slightly reduced tungsten oxide WO3 − a (WO2.84,
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Recent Progress in the Synthesis and Potential Applications of Two‐Dimensional Tungsten (Sub)oxides
Israel Journal of Chemistry, 2022Bojana Višic, Luka Pirker
exaly