Results 341 to 350 of about 3,711,238 (390)

Zinc Vanadates in Vanadium Oxide‐Doped Zinc Oxide Varistors

Journal of the American Ceramic Society, 2001
Convergent‐beam electron diffraction has been used to determine the space groups of β‐ and γ‐Zn3(VO4)2 particles in vanadium oxide‐doped zinc oxide varistors. The crystal structure of β‐Zn3(VO4)2 has been determined to be monoclinic with space group P21 and lattice parameters of a= 9.80 Å, b= 8.34 Å, c= 10.27 Å, and β= 115.8°, whereas that of γ‐Zn3(VO4)
Paul A. Midgley, Huey Hoon Hng, Kevin M. Knowles   +2 more
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Zinc Oxide and Zinc-Cadmium Oxide Phosphors

Journal of The Electrochemical Society, 1968
Zinc oxide phosphors may emit in four different bands, the ultraviolet near‐edge emission, the common green band (possibly involving sulfur), a yellow‐orange band due to selenium, and a red to near infrared band due to ammonia. About 10% of can be replaced by with a corresponding shift, to lower energies, of the optical absorption edge, of the near ...
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Zinc oxide nanoparticles for therapeutic purposes in cancer medicine.

Journal of materials chemistry. B, 2020
The importance of zinc as a trace metal in the human body has long been overlooked. We now gradually discover that the impact of zinc on the health of our body might be as far-reaching as that of iron.
N. Wiesmann, W. Tremel, J. Brieger
semanticscholar   +1 more source

Zinc oxide films by thermal oxidation of zinc thin films

Surface and Coatings Technology, 2005
Zinc thin films were deposited onto glass substrates using magnetron sputtering in argon or argon and oxygen mixed atmospheres. These films were then oxidized in air at 600 °C for 1 h to form thin oxide films. ZnO films formed by oxidation of Zn thin films deposited in Ar normally had a dense structure with oxide whiskers on the surface.
Roger J. Reeves, Z.W. Li, Wei Gao
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Potential risks and benefits of zinc oxide nanoparticles: a systematic review

Critical Reviews in Toxicology, 2020
Zinc oxide nanoparticles are well-known metal oxide nanoparticles having numbers of applications in the field of cosmetology, medicine, and chemistry.
S. Keerthana, Anoop Kumar
semanticscholar   +1 more source

Interstitial zinc in zinc oxide

Journal of Physics and Chemistry of Solids, 1957
Abstract Methods of introducing interstitial zinc into single crystals of zinc oxide are described which involve heating the crystals in zinc vapor followed by rapid quenching. The interstitial zinc atoms act as donors with a low ionization energy and they are observed by the extra conductivity which they impart to the crystals.
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Luminescence of zinc oxide nanorods

Semiconductors, 2007
The spectra of spontaneous and stimulated emission of ZnO nanorods grown by two low-temperature procedures are studied. Stimulated emission at 385 nm is observed at room temperature in CVD ZnO nanocrystals pumped by the nitrogen laser radiation at the wavelength 337 nm. The threshold pumping power density for lasing exitonic recombination is similar to
Emel'Chenko, G. A., Gruzintsev, A. N., Kulakov, A. B., Samarov, E. N., Karpov, I. A., Red'Kin, A. N., Yakimov, E. E., Barthou, C.   +7 more
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Zinc Oxide (ZnO)

2015
Zinc is an essential trace element that is available in over-the-counter supplements. Despite the lack of convincing evidence for effectiveness, some individuals use zinc oxide supplements in order to prevent infections such as the common cold, recurrent ear infections, and lower respiratory infections.
Daniel Thomas Ginat, Juan E. Small
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A quantum chemical study of zinc oxide, copper/zinc oxide, cuprous oxide, and cupric oxide clusters and carbon monoxide chemosorption on zinc oxide(0001), copper zinc oxide(0001), and copper/zinc oxide(0001) surfaces

The Journal of Physical Chemistry, 1987
Copper/zinc oxide mixtures show strong synergistic effects when used together as catalysts, particularly in methanol synthesis and water-gas-shift reactions. The authors have employed semiempirical quantum-mechanical calculations (INDO) to study the electronic properties of ZnO, CuO, and CuO/sub 2/ clusters (less than or equal to 26 atoms), of Cu ...
Charles T. Campbell, Jose A. Rodriguez
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Interstitial zinc clusters in zinc oxide

Physical Review B, 2013
Doped zinc oxide (ZnO) exhibits anomalous Raman modes in the range of 270 to 870 cm${}^{\ensuremath{-}1}$. Commonly, the resonance at 275 cm${}^{\ensuremath{-}1}$ is attributed to the local vibration of Zn atoms in the vicinity of extrinsic dopants. We revisit this assignment by investigating the influence of isotopically purified zinc oxide thin films
N. Karpensky, N. H. Nickel, M. A. Gluba
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