The Experts below are selected from a list of 4617 Experts worldwide ranked by ideXlab platform
B.b. Wang - One of the best experts on this subject based on the ideXlab platform.
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Study on Raman spectra of Zinc Selenide nanopowders synthesized by hydrothermal method
Journal of Alloys and Compounds, 2010Co-Authors: B.b. WangAbstract:Zinc Selenide nanopowders with different structures were synthesized from sodium hydroxide solution by hydrothermal method at different temperatures with Zinc and selenium powders as the precursors. The powders composed of different nanostructures were investigated by X-ray diffraction, transmission electron microscopy and micro-Raman spectroscopy. The results indicate that the products have Zincblende structure and become inhomogeneous with increasing temperature. The peaks in the Raman spectra relate to Zinc Selenide and impurity. In addition, the Raman spectra show that the shapes of the Raman peaks depend on the structure and size of the Zinc Selenide particles in powders. It also shows that the Raman scattering is greatly enhanced when the size of the Zinc Selenide particles is about 10 nm, which relates to the resonance scattering.
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Study on effects of time and temperature on growth of nanocrystalline Zinc Selenide synthesized by hydrothermal method
Journal of Crystal Growth, 2009Co-Authors: B.b. WangAbstract:Abstract Nanostructured Zinc Selenide powder was synthesized in sodium hydroxide solution by hydrothermal method at different times and temperatures using Zinc and selenium powder as precursors, and it was investigated by X-ray diffraction and transmission electron microscopy. The results indicate that the crystalline grains of Zinc Selenide are coarsened with time and temperature, but the grains become inhomogeneous when the growth time is long and the growth temperature is high. According to the results, the formation mechanism of Zinc Selenide was further studied. Simultaneously, the reason of the production of the inhomogeneous grains of Zinc Selenide was analyzed, which results from the different nucleation process.
E. M. Gavrishchuk - One of the best experts on this subject based on the ideXlab platform.
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Recrystallization behavior of Zinc Selenide during chromium diffusion doping
Inorganic Materials, 2017Co-Authors: S. A. Rodin, V. B. Ikonnikov, D. V. Savin, E. M. GavrishchukAbstract:We have studied the effect of high-temperature diffusion doping with chromium (Cr^2+) ions on the microstructure of polycrystalline Zinc Selenide (ZnSe). We have determined energy and kinetic characteristics of solid-state recrystallization in ZnSe and assessed the effect of chromium concentration on the rate of grain growth during the doping process.
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Study of the process of polishing polycrystalline Zinc Selenide using rosin-based polishing resin
Journal of Optical Technology, 2008Co-Authors: E. M. Gavrishchuk, E. Yu. Vilkova, O. V. Timofeev, S. P. Kushnir, B. A. RadbilAbstract:This paper discusses the process of mechanical and chemomechanical polishing of Zinc Selenide using rosin-based polishing resins having various physicochemical characteristics. A study is carried out of how the polishing time, the pressure, and the properties of the polishing resins used here affect the removal rate and the surface quality of optical elements made from polycrystalline Zinc Selenide during their mechanical polishing. It is shown that the surface quality substantially depends on the polishing conditions and the characteristics of the rosin-based resins used here.
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Etching behavior of CVD Zinc Selenide in inorganic acid solutions
Inorganic Materials, 2007Co-Authors: E. M. Gavrishchuk, E. Yu. Vilkova, O. V. Timofeev, U. P. Borovskikh, E. L. TikhonovaAbstract:Chemical interaction between polished surfaces of polycrystalline Zinc Selenide and inorganic acid solutions of various concentrations has been studied.
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Zinc sulfide and Zinc Selenide optical elements for IR engineering
Journal of Optical Technology, 2004Co-Authors: E. M. Gavrishchuk, E. V. YashinaAbstract:This paper presents information on the current status of the production of large Zinc Selenide and Zinc sulfide blanks for devices that operate in the IR region. The paper presents the characteristics of Zinc chalcogenides obtained by chemical vapor deposition, which is the most promising method of obtaining high-quality samples for IR optics. © 2004 Optical Society of America
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Oxidation of polycrystalline Zinc Selenide with atmospheric oxygen
Russian Journal of Applied Chemistry, 2001Co-Authors: E. L. Khlopochkina, P. E. Gaivoronskii, E. M. Gavrishchuk, Yu. E. Elliev, E. V. YashinaAbstract:Oxidation of granulated polycrystalline Zinc Selenide (grain size 0.2-6.5 mm) with atmospheric oxygen at 430-700°C was studied. The optimal conditions for the oxidation were found. An installation for the oxidation of kilogram amounts of Zinc Selenide was designed and fabricated.
E. V. Yashina - One of the best experts on this subject based on the ideXlab platform.
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Zinc sulfide and Zinc Selenide optical elements for IR engineering
Journal of Optical Technology, 2004Co-Authors: E. M. Gavrishchuk, E. V. YashinaAbstract:This paper presents information on the current status of the production of large Zinc Selenide and Zinc sulfide blanks for devices that operate in the IR region. The paper presents the characteristics of Zinc chalcogenides obtained by chemical vapor deposition, which is the most promising method of obtaining high-quality samples for IR optics. © 2004 Optical Society of America
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Influence of Conditions of Zinc Selenide Oxidation with Atmospheric Oxygen on the Composition of Volatile Products
Russian Journal of Applied Chemistry, 2003Co-Authors: E. L. Tikhonova, P. E. Gaivoronskii, Yu. E. Elliev, E. M. Gavrischuk, S. M. Mazavin, E. V. YashinaAbstract:The qualitative and quantitative composition of volatile products of Zinc Selenide oxidation with atmospheric oxygen was determined. The influence of the process conditions on quantitative composition of the volatile products was studied.
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Oxidation of polycrystalline Zinc Selenide with atmospheric oxygen
Russian Journal of Applied Chemistry, 2001Co-Authors: E. L. Khlopochkina, P. E. Gaivoronskii, E. M. Gavrishchuk, Yu. E. Elliev, E. V. YashinaAbstract:Oxidation of granulated polycrystalline Zinc Selenide (grain size 0.2-6.5 mm) with atmospheric oxygen at 430-700°C was studied. The optimal conditions for the oxidation were found. An installation for the oxidation of kilogram amounts of Zinc Selenide was designed and fabricated.
J.p. Rai - One of the best experts on this subject based on the ideXlab platform.
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Electrosynthesis of Zinc Selenide and thallium containing Zinc Selenide thin films and their characterization
Solar Energy Materials and Solar Cells, 1993Co-Authors: J.p. RaiAbstract:Abstract Polycrystalline Zinc Selenide films supported on titanium-substrate have been prepared by electrochemical codeposition under limiting condition. All preparations exhibit p-type semiconductivity. Photoactivity, capacitance, current-voltage measurements also support the above inference. Photoaction spectral studies have been carried out for the determination of band gap. Thallium containing Zinc Selenide electrodes improve activity, stability and charge carrier densities.
A.e.s. Ozhan - One of the best experts on this subject based on the ideXlab platform.
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A solution to adhesion problem of oxide thin films on Zinc Selenide optical substrates
Surface and Coatings Technology, 2017Co-Authors: M.b. Cosar, G.h. Aydogdu, H. Batman, A.e.s. OzhanAbstract:Abstract Zinc Selenide optical substrates have high transparency within the 0.5 to 14.0 μm wavelength range. This makes them an attractive candidate for multi band imaging applications in the optical components. In order to minimize reflection losses for visible, near-infrared and mid-infrared applications, Zinc Selenide lens are coated with multi-layered oxide thin films by physical vapor deposition method or Ion Beam Deposition. In this study, four-layer dual beam anti-reflective coating design at 1.064 μm and between 3.6 and 4.9 μm is applied using Ion Beam Deposition system directly on Zinc Selenide substrates. Because of solving the adhesion problem which is observed after the coating of oxides on Zinc Selenide substrates, they were treated at 300 °C for varying amounts of time before coating oxides. Treated samples were examined in terms of their roughness, contact angle, morphology, refractive index, transparency, crystallography and chemical composition. It is found that it is possible to manufacture durable oxide thin film coatings on Zinc Selenide, utilizing well designed pre-treatment processes.
