Academic literature on the topic 'Evaporated ZnS'

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Journal articles on the topic "Evaporated ZnS"

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Kathirvel, D., and R. Jeyachitra. "Structural Properties of Vacuum Evaporated ZnS Thin Films." International Journal of Macro and Nano Physics 1, no. 1 (January 4, 2016): 57–69. http://dx.doi.org/10.18831/djphys.org/2016011006.

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Urakawa, Yoshifumi, and Karen Gleason. "Tunable Photoluminescence via Thermally Evaporated ZnS Ultra Thin Films." Journal of Coating Science and Technology 1, no. 1 (July 1, 2015): 46–50. http://dx.doi.org/10.6000/2369-3355.2014.01.01.5.

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Abou Samra, R., I. Asaad, and M. Salim. "Structural and optical properties of thermally evaporated ZnS thin films." European Physical Journal Applied Physics 52, no. 3 (November 30, 2010): 30301. http://dx.doi.org/10.1051/epjap/2010162.

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Akyuz, Idris, and Irem Yeni. "Effect of Heat Treatment in Different Atmospheres on Thermally Evaporated ZnS films." Optical Materials 119 (September 2021): 111381. http://dx.doi.org/10.1016/j.optmat.2021.111381.

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Trabishi, Siham, Roula Abou Samra, and Imad Asaad. "Height and Feature Parameters Study of Thermally Evaporated ZnS Thin Films by AFM." Journal of New Technology and Materials 3, no. 1 (2013): 43–49. http://dx.doi.org/10.12816/0010279.

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Mohamed, S. H., and H. M. Ali. "Structural, optical, and photoluminescence characterization of electron beam evaporated ZnS/CdSe nanoparticles thin films." Journal of Applied Physics 109, no. 1 (January 2011): 013108. http://dx.doi.org/10.1063/1.3531991.

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Yokoyama, Hiroyuki. "Photoinduced surface morphology improvement and preferential orientation enhancement in film deposition of evaporated ZnS." Applied Physics Letters 49, no. 20 (November 17, 1986): 1354–56. http://dx.doi.org/10.1063/1.97376.

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Sánchez, T. G., X. Mathew, and N. R. Mathews. "Obtaining phase-pure CZTS thin films by annealing vacuum evaporated CuS/SnS/ZnS stack." Journal of Crystal Growth 445 (July 2016): 15–23. http://dx.doi.org/10.1016/j.jcrysgro.2016.03.039.

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Theis, D., and R. Wengert. "Cathodoluminescent Properties of Evaporated ZnS : Mn Films in the 2–6 kV Acceleration Voltage Range." Journal of The Electrochemical Society 132, no. 10 (October 1, 1985): 2507–10. http://dx.doi.org/10.1149/1.2113610.

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Vishwakarma, Rahul, and Archana Sahoo. "Effect of Annealing on Structural, Electrical and Optical Properties of Thermally Evaporated ZnS Thin Films." Journal of Advanced Physics 6, no. 2 (June 1, 2017): 274–78. http://dx.doi.org/10.1166/jap.2017.1331.

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Dissertations / Theses on the topic "Evaporated ZnS"

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Tsai, Tz-Peng, and 蔡子鵬. "Study of thermal evaporated ZnO thin film." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/98338331265966759818.

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碩士
國立高雄大學
電機工程學系--先進電子構裝技術產業研發碩
97
In this dissertation, we studied the formation of N-type Zinc Oxide ( ZnO ) thin film by thermal evaporated ZnO powder on P-type Si substrate followed by thermal treatment. The surface morphologies and film transmission properties of single and double layer ZnO film with different treatments were studied. The electrical and optical properties for the corresponded ZnO-Si diodes were also characterized. With suitable treatment in the double layer structure, the diode with low dark current and high photo current can be achieved. The dark current mechanism for these ZnO-Si diodes was studied.
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Conference papers on the topic "Evaporated ZnS"

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Kim, Jin-Sang, Jong-Hyung Song, and Sang-Hee Suh. "Electrical properties of ZnS, CdTe/HgCdTe interfaces evaporated from effusion cell in UHV chamber." In International Symposium on Optical Science and Technology, edited by Bjorn F. Andresen, Gabor F. Fulop, and Marija Strojnik. SPIE, 2000. http://dx.doi.org/10.1117/12.409836.

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Abu Hamed, Tareq, Jane H. Davidson, and Mark Stolzenburg. "Hydrogen Production via Hydrolysis of Zn in a Hot Wall Flow Reactor." In ASME 2007 Energy Sustainability Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/es2007-36176.

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Hydrolysis of Zn is investigated as the second step in a ZnO/Zn redox solar water splitting process. Zinc is evaporated and hydrolyzed in a hot wall flow tubular reactor. The design of the reactor was suggested by prior studies at ETH-Swiss Federal Institute in which simultaneous synthesis of hydrogen and zinc oxide nanoparticles was the goal. The influence of the reactor temperature and residence time on hydrogen conversion was measured for 1023 and 1073 K. Particle yield was measured in-situ using a scanning differential mobility sizer. Particle composition and morphology were characterized with X-ray diffraction and microscopy. In agreement with the prior work, hydrogen conversions of 87 to 96 percent at temperatures above zinc saturation are attributed primarily to hydrolysis of zinc(g) at the wall of the reactor.
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Sharma, Shail, Tarun Chandel, and P. Rajaram. "Growth and properties of vacuum evaporated ZnSe thin films." In 2015 2nd International Conference on Opto-Electronics and Applied Optics (IEM OPTRONIX). IEEE, 2015. http://dx.doi.org/10.1109/optronix.2015.7345531.

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Nicodemus, Julia Haltiwanger, and Jane H. Davidson. "A Transverse Jet Reactor for Zinc Aerosol Hydrolysis." In ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/es2012-91231.

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Performance of a reactor designed for the hydrolysis of Zn in the two-step Zn/ZnO solar thermochemical cycle for hydrogen production is explored. Technically, complete hydrolysis of Zn in the hydrogen production step remains a major barrier to implementation, and much attention has been given to Zn nano-scale reacting aerosols as a solution. The success of this continuous process depends on achieving high particle yields and high conversions in the aerosol. A key challenge is to control the flow field in aerosol reactors to keep the particles entrained in the flow without deposition on the reactor wall. The ability of a new reactor concept based on transverse jet fluid dynamics to control the flow field and rapidly cool the Zn vapor is investigated. In the transverse jet reactor, evaporated Zn entrained in an Ar carrier gas issues vertically into the horizontal tubular reactor through which cooler H2O and Ar flow. Particles are formed in the presence of steam at ∼ 450K. The trajectory of the jet is controlled via the effective velocity ratio, R, which is the square root of the ratio of the kinetic energy of the jet to that of the cross-flow. A computational fluid dynamics (CFD) model indicates that the trajectory of the jet can be controlled so that the majority of the Zn mass is directed down the center of the reactor, not near the reactor walls for R = 4.25 to R = 4.5. Experimentally, maximum particle yields of 93% of the mass entering the reactor are obtained at R = 4.5.
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Rajesh, S., V. Arivazhagan, and M. Manonmani Parvathi. "Structural, optical and electrical properties of vacuum evaporated PbSe/ZnSe multilayer thin films." In INDIAN VACUUM SOCIETY SYMPOSIUM ON THIN FILMS: SCIENCE AND TECHNOLOGY. AIP, 2012. http://dx.doi.org/10.1063/1.4732413.

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Thiwawong, Thutiyapom, Benchapol Tunhoo, and Jiti Nukeaw. "Crystalline Structure and Morphology of ZnSe/CuPc Hybrid Thin Film prepared by Electron Beam Evaporator." In 2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2007. http://dx.doi.org/10.1109/nems.2007.352097.

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Thiwawong, Thutiyaporn, Benchapol Tunhoo, and Jiti Nukeaw. "Structural and Optical Properties of CuPc/ZnSe Multilayer Hybrid Thin Films Prepared by Electron Beam Evaporator." In 7th IEEE International Conference on Nanotechnology. IEEE, 2007. http://dx.doi.org/10.1109/nano.2007.4601140.

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Khairnar, U. P., and S. R. Jadhav. "The formation of thermally evaporated stable Schottky barriers on p-Zn[sub x]Pb[sub (1-x)]Te thin films." In PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS AND MATERIAL SCIENCE: RAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4810310.

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McClure, Emma R., and Van P. Carey. "Nanoscale and Macroscale Effects of Mineral Deposition During Water Evaporation on Nanoporous Surfaces." In ASME 2020 Heat Transfer Summer Conference collocated with the ASME 2020 Fluids Engineering Division Summer Meeting and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ht2020-8941.

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Abstract Recent studies have indicated that droplet evaporation heat transfer can be substantially enhanced by fabricating a thin nanoporous superhydrophilic layer on a metal substrate. Such surfaces have immense potential to improve spray cooling processes, however, little durability testing of the surfaces have been performed. In spray cooling applications, as water evaporates any impurities in the water will be deposited onto the surface. Primarily, this investigation serves to demonstrate how minerals in hard water deposit on the surface and interact with the ZnO nanopillars of the superhydrophilic surface. Quantifying the effects of mineral scale on droplet spreading and vaporization heat transfer on the surface is important in determining implementation requirements to advance the surface into industry applications. Micrographs of the surface demonstrate minerals deposit nonuniformly, and quickly fill the nanostructure. Despite a reduction in the extent of droplet spreading due to the mineral deposition, scaled surfaces still demonstrated improved thermal performance compared to the uncoated, smooth copper surface. Scale tended to build up on previously deposited scale leaving largely uncoated areas where droplets chose to preferentially spread resulting in a continued low contact angle. Maintaining these uncoated areas and reducing the contaminants present in the water will extend the life and performance of the nanostructured surface.
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LaBrie, Russell J., Jorge Padilla, and Van P. Carey. "Experimental Study of Aqueous Binary Mixture Droplet Vaporization on Nanostructured Surfaces." In ASME 2015 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems collocated with the ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ipack2015-48153.

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In this study heat transfer due to vaporization is investigated for low concentration binary mixtures of 2-propanol/water on nanostructured surfaces. The surfaces are comprised of zinc oxide (ZnO) nanocrystals grown by hydrothermal synthesis on a smooth copper substrate having an average roughness of 0.06 μm. Three nanostructured surfaces used in this study differ only in the duration of the hydrothermal synthesis consisting of 4, 10, and 24 hours of surface growth. Surface geometries were observed to be a function of hydrothermal synthesis time with an increase in area coverage, length, and diameter of nanocrystals with increase synthesis time. ZnO nanocrystals exhibit mean diameter of 500–700 nm, mean length of 1.7–3.3 μm and porosities of 0.04–0.58. Individual droplets between 2.5–3.9 mm in diameter consisting of a binary mixture of 2-propanol/water with concentration of either 0.01 M or 0.03 M were deposited at a minimum distance above the surface that would be sufficient for droplets to detach on their own due to gravity onto a nanostructured surface at temperatures between 110–140 °C. High speed video was used to record the deposition and vaporization process and through image analysis it was possible to measure heat transfer coefficients based on the wetted area, as well as other parameters. Through the video analysis it was observed that droplets which are approximately spherical, impact the surface and spread into a thin film with mean film thickness between 65–400 μm which then evaporated by film evaporation without nucleate boiling. Wettability of each of the surfaces was characterized through contact angle measurements from photographs of the droplet profile when the droplet profile was discernible. When profiles were not discernible due to hydrophilicity of some surfaces, contact angles were calculated by utilizing droplet volume and spread area. Contact angle measurements were performed on the surfaces before and after each experiment in order to document changes in wettability as a result of experimentation. Results from this experiment are compared to water droplet vaporization results from a previous experiment in order to determine whether 2-propanol enhances the heat transfer, and found that the heat transfer coefficient was increased by up to 128% in some cases. Heat transfer enhancement was found to be a function of droplet diameter as well as mixture concentration with 3.9 mm 0.01 M 2-propanol/water droplets showing larger enhancement. Potential uses of heat transfer in this application are also discussed.
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