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sputtering</title> <meta name="description" content="Search results for: magnetron sputtering"> <meta name="keywords" content="magnetron sputtering"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="magnetron sputtering"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 132</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: magnetron sputtering</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">132</span> Decoration of Multi-Walled Carbon Nanotubes by CdS Nanoparticles Using Magnetron Sputtering Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Z.%20Ghorannevis">Z. Ghorannevis</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Akbarnejad"> E. Akbarnejad</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Aghazadeh"> B. Aghazadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Ghoranneviss"> M. Ghoranneviss</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carbon nanotubes (CNTs) modified with semiconductor nanocrystalline particles may find wide applications due to their unique properties. Here Cadmium Sulfide (CdS) nanoparticles were successfully grown on Multi-Walled Carbon Nanotubes (MWNTs) via a magnetron sputtering method for the first time. The CdS/MWNTs sample was characterized with X-ray diffraction (XRD), Field Emission Scanning and High Resolution Transmission Electron Microscopies (SEM/TEM) and four point probe. The obtained images show clearly the decoration of the MWNTs by the CdS nanoparticles, and the XRD measurements indicate the CdS structure as hexagonal type. Moreover, the physical properties of the CdS/MWNTs were compared with the physical properties of the CdS nanoparticles grown on the silicon. Electrical measurements of CdS and CdS/MWNTs reveal that CdS/MWNTs has lower resistivity than the CdS sample which may be due to the higher carrier concentrations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CdS" title="CdS">CdS</a>, <a href="https://publications.waset.org/abstracts/search?q=MWNTs" title=" MWNTs"> MWNTs</a>, <a href="https://publications.waset.org/abstracts/search?q=HRTEM" title=" HRTEM"> HRTEM</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a> </p> <a href="https://publications.waset.org/abstracts/39232/decoration-of-multi-walled-carbon-nanotubes-by-cds-nanoparticles-using-magnetron-sputtering-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39232.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">131</span> Fabrication of Profile-Coated Rhodium X-Ray Focusing Mirror</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bing%20Shi">Bing Shi</a>, <a href="https://publications.waset.org/abstracts/search?q=Raymond%20A.%20Conley"> Raymond A. Conley</a>, <a href="https://publications.waset.org/abstracts/search?q=Jun%20Qian"> Jun Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=Xianbo%20Shi"> Xianbo Shi</a>, <a href="https://publications.waset.org/abstracts/search?q=Steve%20Heald"> Steve Heald</a>, <a href="https://publications.waset.org/abstracts/search?q=Lahsen%20Assoufid"> Lahsen Assoufid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A pair of Kirkpatrick-Baez (KB) mirrors were designed and fabricated for experiments within a hard x-ray energy range lower than 20 kev at beamline 20-ID in a synchrotron radiation facility, Advanced Photon Source (APS). The KB mirrors were deposited with Rhodium thin films using a customized designed and self-built magnetron sputtering system. The purpose of these mirrors is to focus the x-ray beam down to 1 micron. This is the first pair of Rhodium-coated KB mirrors with elliptical shape that was fabricated using the profile coating technique. The profile coating technique is to coat the substrate with designed shape using masks during the deposition. The mirrors were equipped at the beamline and achieved the designed focusing requirement. The details of the mirror design, the fabrication process, and the customized magnetron sputtering deposition system will be discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetron-sputtering%20deposition" title="magnetron-sputtering deposition">magnetron-sputtering deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=focusing%20optics" title=" focusing optics"> focusing optics</a>, <a href="https://publications.waset.org/abstracts/search?q=x-ray" title=" x-ray"> x-ray</a>, <a href="https://publications.waset.org/abstracts/search?q=rhodium%20thin%20film" title=" rhodium thin film"> rhodium thin film</a> </p> <a href="https://publications.waset.org/abstracts/83345/fabrication-of-profile-coated-rhodium-x-ray-focusing-mirror" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83345.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">374</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">130</span> Growth of Metal Oxide (Tio2/Ag) Thin Films Sputtered by Hipims Effective in Bacterial Inactivation: Plasma Chemistry and Energetic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20Baghriche">O. Baghriche</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Zertal"> A. Zertal</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Pulgarin"> C. Pulgarin</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Kiwi"> J. Kiwi</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Sanjines"> R. Sanjines</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High-Power Impulse Magnetron Sputtering (HIPIMS) is a technology that belongs to the field of Ionized PVD of thin films. This study shows the first complete report on ultrathin TiO2/Ag nano-particulate films sputtered by highly ionized pulsed plasma magnetron sputtering (HIPIMS) leading to fast bacterial loss of viability. The Ag and the TiO2/Ag sputtered films induced complete Escherichia coli inactivation in the dark, which was not observed in the case of TiO2. When Ag was present, the bacterial inactivation was accelerated under low intensity solar simulated light and this has implications for a potential for a practical technology. The design, preparation, testing and surface characterization of these innovative films are described in this study. The HIPIMS sputtered composite films present an appreciable savings in metals compared to films obtained by conventional sputtering methods. HIPIMS sputtering induces a strong interaction with the rugous polyester 3-D structure due to the higher fraction of the Ag-ions (M+) attained in the magnetron chamber. The immiscibility of Ag and TiO2 in the TiO2/Ag films is shown by High Angular Dark Field (HAADF) microscopy. The ionization degree of the film forming species is significantly increased and film growth is assisted by an intense ion flux. Reports have revealed the significant enhancement of the film properties as the HIPIMS technology is used. However, a decrease of the deposition rate, as compared to the conventional DC magnetron sputtering Pulsed (DCMSP) process is commonly observed during HIPIMS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20coli" title="E. coli">E. coli</a>, <a href="https://publications.waset.org/abstracts/search?q=HIPIMS" title=" HIPIMS"> HIPIMS</a>, <a href="https://publications.waset.org/abstracts/search?q=inactivation%20bacterial" title=" inactivation bacterial"> inactivation bacterial</a>, <a href="https://publications.waset.org/abstracts/search?q=sputtering" title=" sputtering"> sputtering</a> </p> <a href="https://publications.waset.org/abstracts/25208/growth-of-metal-oxide-tio2ag-thin-films-sputtered-by-hipims-effective-in-bacterial-inactivation-plasma-chemistry-and-energetic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25208.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">300</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">129</span> Structure and Properties of Intermetallic NiAl-Based Coatings Produced by Magnetron Sputtering Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tatiana%20S.%20Ogneva">Tatiana S. Ogneva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aluminum and nickel-based intermetallic compounds have attracted the attention of scientific community as promising materials for heat-resistant and wear-resistant coatings in such manufacturing areas as microelectronics, aircraft and rocket building and chemical industries. Magnetron sputtering makes possible to coat materials without formation of liquid phase and improves the mechanical and functional properties of nickel aluminides due to the possibility of nanoscale structure formation. The purpose of the study is the investigation of structure and properties of intermetallic coatings produced by magnetron sputtering technique. The feature of this work is the using of composite targets for sputtering, which were consisted of two semicircular sectors of cp-Ni and cp-Al. Plates of alumina, silicon, titanium and steel alloys were used as substrates. To estimate sputtering conditions on structure of intermetallic coatings, a series of samples were produced and studied in detail using scanning and transition electron microcopy and X-Ray diffraction. Besides, nanohardness and scratching tests were carried out. The varying parameters were the distance from the substrate to the target, the duration and the power of the sputtering. The thickness of the obtained intermetallic coatings varied from 0.05 to 0.5 mm depending on the sputtering conditions. The X-ray diffraction data indicated that the formation of intermetallic compounds occurred after sputtering without additional heat treatment. Sputtering at a distance not closer than 120 mm led to the formation of NiAl phase. Increase in the power of magnetron from 300 to 900 W promoted the increase of heterogeneity of the phase composition and the appearance of intermetallic phases NiAl, Ni₂Al₃, NiAl₃, and Al under the aluminum side, and NiAl, Ni₃Al, and Ni under the nickel side of the target. A similar trend is observed with increasing the distance of sputtering from 100 to 60 mm. The change in the phase composition correlates with the changing of the atomic composition of the coatings. Scanning electron microscopy revealed that the coatings have a nanoscale grain structure. In this case, the substrate material and the distance from the substrate to the magnetron have a significant effect on the structure formation process. The size of nanograins differs from 10 to 83 nm and depends not only on the sputtering modes but also on material of a substrate. Nanostructure of the material influences the level of mechanical properties. The highest level of nanohardness of the coatings deposited during 30 minutes on metallic substrates at a distance of 100 mm reached 12 GPa. It was shown that nanohardness depends on the grain size of the intermetallic compound. Scratching tests of the coatings showed a high level of adhesion of the coating to substrate without any delamination and cracking. The results of the study showed that magnetron sputtering of composite targets consisting of nickel and aluminum semicircles makes it possible to form intermetallic coatings with good mechanical properties directly in the process of sputtering without additional heat treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=intermetallic%20coatings" title="intermetallic coatings">intermetallic coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=structure" title=" structure"> structure</a> </p> <a href="https://publications.waset.org/abstracts/111417/structure-and-properties-of-intermetallic-nial-based-coatings-produced-by-magnetron-sputtering-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/111417.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">121</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">128</span> Synthesis and Tribological Properties of the Al-Cr-N/MoS₂ Self-Lubricating Coatings by Hybrid Magnetron Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tie-Gang%20Wang">Tie-Gang Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=De-Qiang%20Meng"> De-Qiang Meng</a>, <a href="https://publications.waset.org/abstracts/search?q=Yan-Mei%20Liu"> Yan-Mei Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ternary AlCrN coatings were widely used to prolong cutting tool life because of their high hardness and excellent abrasion resistance. However, the friction between the workpiece and cutter surface was increased remarkably during machining difficult-to-cut materials (such as superalloy, titanium, etc.). As a result, a lot of cutting heat was generated and cutting tool life was shortened. In this work, an appropriate amount of solid lubricant MoS₂ was added into the AlCrN coating to reduce the friction between the tool and the workpiece. A series of Al-Cr-N/MoS₂ self-lubricating coatings with different MoS₂ contents were prepared by high power impulse magnetron sputtering (HiPIMS) and pulsed direct current magnetron sputtering (Pulsed DC) compound system. The MoS₂ content in the coatings was changed by adjusting the sputtering power of the MoS₂ target. The composition, structure and mechanical properties of the Al-Cr-N/MoS2 coatings were systematically evaluated by energy dispersive spectrometer, scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffractometer, nano-indenter tester, scratch tester, and ball-on-disk tribometer. The results indicated the lubricant content played an important role in the coating properties. As the sputtering power of the MoS₂ target was 0.1 kW, the coating possessed the highest hardness 14.1GPa, the highest critical load 44.8 N, and the lowest wear rate 4.4×10−3μm2/N. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=self-lubricating%20coating" title="self-lubricating coating">self-lubricating coating</a>, <a href="https://publications.waset.org/abstracts/search?q=Al-Cr-N%2FMoS%E2%82%82%20coating" title=" Al-Cr-N/MoS₂ coating"> Al-Cr-N/MoS₂ coating</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20rate" title=" wear rate"> wear rate</a>, <a href="https://publications.waset.org/abstracts/search?q=friction%20coefficient" title=" friction coefficient"> friction coefficient</a> </p> <a href="https://publications.waset.org/abstracts/116546/synthesis-and-tribological-properties-of-the-al-cr-nmos2-self-lubricating-coatings-by-hybrid-magnetron-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116546.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">132</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">127</span> The Formation of Thin Copper Films on Graphite Surface Using Magnetron Sputtering Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zydrunas%20Kavaliauskas">Zydrunas Kavaliauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=Aleksandras%20Iljinas"> Aleksandras Iljinas</a>, <a href="https://publications.waset.org/abstracts/search?q=Liutauras%20Marcinauskas"> Liutauras Marcinauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=Mindaugas%20Milieska"> Mindaugas Milieska</a>, <a href="https://publications.waset.org/abstracts/search?q=Vitas%20Valincius"> Vitas Valincius</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The magnetron sputtering deposition method is often used to obtain thin film coatings. The main advantage of magnetron vaporization compared to other deposition methods is the high rate erosion of the cathode material (e.g., copper, aluminum, etc.) and the ability to operate under low-pressure conditions. The structure of the formed coatings depends on the working parameters of the magnetron deposition system, which is why it is possible to influence the properties of the growing film, such as morphology, crystal orientation, and dimensions, stresses, adhesion, etc. The properties of these coatings depend on the distance between the substrate and the magnetron surface, the vacuum depth, the gas used, etc. Using this deposition technology, substrates are most often placed near the anode. The magnetic trap of the magnetrons for localization of electrons in the cathode region is formed using a permanent magnet system that is on the side of the cathode. The scientific literature suggests that, after insertion of a small amount of copper into graphite, the electronic conductivity of graphite increase. The aim of this work is to create thin (up to 300 nm) layers on a graphite surface using a magnetron evaporation method, to investigate the formation peculiarities and microstructure of thin films, as well as the mechanism of copper diffusion into graphite inner layers at different thermal treatment temperatures. The electron scanning microscope was used to investigate the microrelief of the coating surface. The chemical composition is determined using the EDS method, which shows that, with an increase of the thermal treatment of the copper-carbon layer from 200 °C to 400 °C, the copper content is reduced from 8 to 4 % in atomic mass units. This is because the EDS method captures only the amount of copper on the graphite surface, while the temperature of the heat treatment increases part of the copper because of the diffusion processes penetrates into the inner layers of the graphite. The XRD method shows that the crystalline copper structure is not affected by thermal treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon" title="carbon">carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=coatings" title=" coatings"> coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=copper" title=" copper"> copper</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a> </p> <a href="https://publications.waset.org/abstracts/88995/the-formation-of-thin-copper-films-on-graphite-surface-using-magnetron-sputtering-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88995.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">290</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">126</span> Properties of Nanostructured MgB₂ Films Deposited by Magnetron Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20A.%20Prikhna">T. A. Prikhna</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20V.%20Shaternik"> A. V. Shaternik</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20E.%20Moshchil"> V. E. Moshchil</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Eisterer"> M. Eisterer</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20E.%20Shaternik"> V. E. Shaternik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper presents the results of studying the structure, phase composition, relief, and superconducting characteristics of oxygen-containing thin films of magnesium diboride (MgB₂) deposited on a dielectric substrate by magnetron sputtering of diboride-magnesium targets. The possibility of forming films of varying degrees of crystalline perfection and phase composition in the process of precipitation and annealing is shown, depending on the conditions of deposition and annealing. In the films, it is possible to realize various combinations of the Abrikosov vortex pinning centers (in the places of fluctuations of the critical temperature of the superconducting transition (T <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=critical%20current%20density" title="critical current density">critical current density</a>, <a href="https://publications.waset.org/abstracts/search?q=diboride" title=" diboride"> diboride</a>, <a href="https://publications.waset.org/abstracts/search?q=superconducting%20thin%20films" title=" superconducting thin films"> superconducting thin films</a>, <a href="https://publications.waset.org/abstracts/search?q=upper%20critical%20field" title=" upper critical field"> upper critical field</a> </p> <a href="https://publications.waset.org/abstracts/115765/properties-of-nanostructured-mgb2-films-deposited-by-magnetron-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/115765.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">109</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">125</span> Ge₁₋ₓSnₓ Alloys with Tuneable Energy Band Gap on GaAs (100) Substrate Manufactured by a Modified Magnetron Co-Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Li%20Qian">Li Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinchao%20Tong"> Jinchao Tong</a>, <a href="https://publications.waset.org/abstracts/search?q=Daohua%20Zhang"> Daohua Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Weijun%20Fan"> Weijun Fan</a>, <a href="https://publications.waset.org/abstracts/search?q=Fei%20Suo"> Fei Suo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photonic applications based on group IV semiconductors have always been an interest but also a challenge for the research community. We report manufacturing group IV Ge₁₋ₓSnₓ alloys with tuneable energy band gap on (100) GaAs substrate by a modified radio frequency magnetron co-sputtering. Images were taken by atomic force microscope, and scanning electron microscope clearly demonstrates a smooth surface profile, and Ge₁₋ₓSnₓ nano clusters are with the size of several tens of nanometers. Transmittance spectra were measured by Fourier Transform Infrared Spectroscopy that showed changing energy gaps with the variation in elementary composition. Calculation results by 8-band k.p method are consistent with measured gaps. Our deposition system realized direct growth of Ge₁₋ₓSnₓ thin film on GaAs (100) substrate by sputtering. This simple deposition method was modified to be able to grow high-quality photonic materials with tuneable energy gaps. This work provides an alternative and successful method for fabricating Group IV photonic semiconductor materials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GeSn" title="GeSn">GeSn</a>, <a href="https://publications.waset.org/abstracts/search?q=crystal%20growth" title=" crystal growth"> crystal growth</a>, <a href="https://publications.waset.org/abstracts/search?q=sputtering" title=" sputtering"> sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=photonic" title=" photonic"> photonic</a> </p> <a href="https://publications.waset.org/abstracts/96173/ge1sn-alloys-with-tuneable-energy-band-gap-on-gaas-100-substrate-manufactured-by-a-modified-magnetron-co-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96173.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">124</span> Wear Resistance and Thermal Stability of Tungsten Boride Layers Deposited by Magnetron Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Justyna%20Chrzanowska">Justyna Chrzanowska</a>, <a href="https://publications.waset.org/abstracts/search?q=Jacek%20Hoffman"> Jacek Hoffman</a>, <a href="https://publications.waset.org/abstracts/search?q=Dariusz%20Garbiec"> Dariusz Garbiec</a>, <a href="https://publications.waset.org/abstracts/search?q=%C5%81ukasz%20Kurpaska"> Łukasz Kurpaska</a>, <a href="https://publications.waset.org/abstracts/search?q=Piotr%20Denis"> Piotr Denis</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomasz%20Moscicki"> Tomasz Moscicki</a>, <a href="https://publications.waset.org/abstracts/search?q=Zygmunt%20Szymanski"> Zygmunt Szymanski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Tungsten and boron compounds belong to the group of superhard materials and its hardness could exceed 40 GPa. In this study, the properties of the tungsten boride (WB) layers deposited in magnetron sputtering process are investigated. The sputtering process occurred from specially prepared targets that were composed of boron and tungsten mixed in molar ratio of 2.5 or 4.5 and sintered in spark plasma sintering process. WB layers were deposited on silicon (100) and stainless steel 304 substrates at room temperature (RT) or in 570 °C. Layers deposited in RT and in elevated temperature varied considerably. Layers deposited in RT are amorphous and have low adhesion. In contrast, the layers deposited in 570 °C are crystalline and have good adhesion. All deposited layers have a hardness about 40 GPa. Moreover, the friction coefficient of crystalline layers is 0.22 and wear rate is about 0.67•10-6 mm3N-1m-1. After material characterization the WB layers were annealed in argon atmosphere in 1000 °C for 1 hour. On the basis of X-Ray Diffraction analysis, it has been noted that the crystalline layers are thermally stable and do not change their phase composition, whereas the amorphous layers change their phase composition. Moreover, after annealing, on the surface of WB layers some cracks were observed. It is probably connected with the differences of the thermal expansion between the layer and the substrate. Despite of the presence of cracks, the wear resistance of annealed layers is still higher than the wear resistance of uncoated substrate. The analysis of the structure and properties of tungsten boride layers lead to the discussion about the application area of this material. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hard%20coatings" title="hard coatings">hard coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20materials" title=" hard materials"> hard materials</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=tungsten%20boride" title=" tungsten boride"> tungsten boride</a> </p> <a href="https://publications.waset.org/abstracts/63347/wear-resistance-and-thermal-stability-of-tungsten-boride-layers-deposited-by-magnetron-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63347.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">288</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">123</span> Analysis of Structural and Photocatalytical Properties of Anatase, Rutile and Mixed Phase TiO2 Films Deposited by Pulsed-Direct Current and Radio Frequency Magnetron Co-Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Varnagiris">S. Varnagiris</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Urbonavicius"> M. Urbonavicius</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Tuckute"> S. Tuckute</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Lelis"> M. Lelis</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Bockute"> K. Bockute</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Amongst many water purification techniques, TiO<sub>2</sub> photocatalysis is recognized as one of the most promising sustainable methods. It is known that for photocatalytical applications anatase is the most suitable TiO<sub>2</sub> phase, however heterojunction of anatase/rutile phases could improve the photocatalytical activity of TiO<sub>2</sub> even further. Despite the relative simplicity of TiO<sub>2</sub> different synthesis methods lead to the highly dispersed crystal phases and photocatalytic activity of the corresponding samples. Accordingly, suggestions and investigations of various innovative methods of TiO<sub>2</sub> synthesis are still needed. In this work structural and photocatalytical properties of TiO<sub>2</sub> films deposited by the unconventional method of simultaneous co-sputtering from two magnetrons powered by pulsed-Direct Current (pDC) and Radio Frequency (RF) power sources with negative bias voltage have been studied. More specifically, TiO<sub>2</sub> film thickness, microstructure, surface roughness, crystal structure, optical transmittance and photocatalytical properties were investigated by profilometer, scanning electron microscope, atomic force microscope, X-ray diffractometer and UV-Vis spectrophotometer respectively. The proposed unconventional two magnetron co-sputtering based TiO<sub>2</sub> film formation method showed very promising results for crystalline TiO<sub>2</sub> film formation while keeping process temperatures below 100 °C. XRD analysis revealed that by using proper combination of power source type and bias voltage various TiO<sub>2</sub> phases (amorphous, anatase, rutile or their mixture) can be synthesized selectively. Moreover, strong dependency between power source type and surface roughness, as well as between the bias voltage and band gap value of TiO<sub>2</sub> films was observed. Interestingly, TiO<sub>2</sub> films deposited by two magnetron co-sputtering without bias voltage had one of the highest band gap values between the investigated films but its photocatalytic activity was superior compared to all other samples. It is suggested that this is due to the dominating nanocrystalline anatase phase with various exposed surfaces including photocatalytically the most active {001}. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=films" title="films">films</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20co-sputtering" title=" magnetron co-sputtering"> magnetron co-sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=photocatalysis" title=" photocatalysis"> photocatalysis</a>, <a href="https://publications.waset.org/abstracts/search?q=TiO%E2%82%82" title=" TiO₂"> TiO₂</a> </p> <a href="https://publications.waset.org/abstracts/112376/analysis-of-structural-and-photocatalytical-properties-of-anatase-rutile-and-mixed-phase-tio2-films-deposited-by-pulsed-direct-current-and-radio-frequency-magnetron-co-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/112376.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">116</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">122</span> Controlling the Degradation Rate of Biodegradable Mg Implant Using Magnetron-Sputtered (Zr-Nb) Thin Films</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Somayeh%20Azizi">Somayeh Azizi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Hossein%20Ehsani"> Mohammad Hossein Ehsani</a>, <a href="https://publications.waset.org/abstracts/search?q=Amir%20Zareidoost"> Amir Zareidoost</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, a technique has been developed to reduce the corrosion rate of magnesium (Mg) metal by creating Zr-Nb thin film coatings. In this regard, thin-film coatings of niobium (Nb) zirconium (Zr) double alloy are applied on pure Mg specimens under different processes conditions, such as the change of the substrate temperature, substrate bias, and coating thickness using the magnetron sputtering method. Then, deposited coatings are analyzed in terms of surface features via field-emission scanning electron microscopy (FE-SEM), thin-layer X-ray diffraction (GI-XRD), energy-dispersive X-ray spectroscopy (EDS), atomic force microscopy (AFM), and corrosion tests. Also, nano-scratch tests were carried out to investigate the adhesion of the thin film. The results showed that the (Zr-Nb) thin films could control the degradation rate of Mg in the simulated body fluid (SBF). The nano-scratch studies depicted that the (Zr-Nb) thin films have a proper adhesion with the Mg substrate. Therefore, this technique could be used to enhance the corrosion resistance of bare Mg and could result in improving the performance of the biodegradable Mg implant for orthopedic applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%28Zr-Nb%29%20thin%20film" title="(Zr-Nb) thin film">(Zr-Nb) thin film</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=biodegradable%20Mg" title=" biodegradable Mg"> biodegradable Mg</a>, <a href="https://publications.waset.org/abstracts/search?q=degradation%20rate" title=" degradation rate"> degradation rate</a> </p> <a href="https://publications.waset.org/abstracts/159057/controlling-the-degradation-rate-of-biodegradable-mg-implant-using-magnetron-sputtered-zr-nb-thin-films" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159057.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">120</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">121</span> The Microstructure of Aging ZnO, AZO, and GZO Films</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zue%20Chin%20Chang">Zue Chin Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shih-Chang%20Liang"> Shih-Chang Liang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> RF magnetron sputtering is used on the ceramic targets, each of which contains zinc oxide (ZnO), zinc oxide doped with aluminum (AZO) and zinc oxide doped with gallium (GZO). The electric conduction mechanism of the AZO and GZO films came mainly from the Al and Ga, the oxygen vacancies, Zn interstitial atoms, and Al and/or Ga interstitial atoms. AZO and GZO films achieved higher conduction than did ZnO film, it being ion vacant and nonstoichiometric. The XRD analysis showed a preferred orientation along the (002) plane for ZnO, AZO, and GZO films. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ZnO" title="ZnO">ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=AZO" title=" AZO"> AZO</a>, <a href="https://publications.waset.org/abstracts/search?q=GZO" title=" GZO"> GZO</a>, <a href="https://publications.waset.org/abstracts/search?q=doped" title=" doped"> doped</a>, <a href="https://publications.waset.org/abstracts/search?q=sputtering" title=" sputtering"> sputtering</a> </p> <a href="https://publications.waset.org/abstracts/4918/the-microstructure-of-aging-zno-azo-and-gzo-films" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4918.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">396</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">120</span> Multipass Scratch Characterization of TiNbVN Thin Coatings Deposited by Magnetron Sputtering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hikmet%20Cicek">Hikmet Cicek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transition metal nitrides are widely used as protective coatings on machine parts and cutting tools to protect the surfaces from abrasion and corrosion for decades. In this study, the ternary TiNbVN thin coatings were produced with closed field unbalanced magnetron sputtering system and their structural, mechanical and fatigue-like (multi-pass scratch test) properties were investigated. Two different substrates (M2 and H13 steels) were used to explore substrates effects. X-Ray diffractometer, scanning electron microscope, and energy dispersive spectroscopy were used for the structural and chemical analysis of the coatings. Nanohardness tests were proceed for mechanical properties. The fatigue-like properties of the coatings obtained from the multi-scratch test under three different cycle passes. The results showed that TiNbVN films have excellent fatigue resistance and the coatings deposited on M2 steel substrate have higher hardness and better fatigue resistance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=physical%20vapor%20deposition" title="physical vapor deposition">physical vapor deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=fatigue" title=" fatigue"> fatigue</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20nitride" title=" metal nitride"> metal nitride</a>, <a href="https://publications.waset.org/abstracts/search?q=multipass%20scratch%20test" title=" multipass scratch test "> multipass scratch test </a> </p> <a href="https://publications.waset.org/abstracts/90196/multipass-scratch-characterization-of-tinbvn-thin-coatings-deposited-by-magnetron-sputtering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90196.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">209</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">119</span> Unbalanced Cylindrical Magnetron for Accelerating Cavities Coating</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Rosaz">G. Rosaz</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Semblanet"> V. Semblanet</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Calatroni"> S. Calatroni</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Sublet"> A. Sublet</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Taborelli"> M. Taborelli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We report in this paper the design and qualification of a cylindrical unbalanced magnetron source. The dedicated magnetic assemblies were simulated using a finite element model. A hall-effect magnetic probe was then used to characterize those assemblies and compared to the theoretical magnetic profiles. These show a good agreement between the expected and actual values. The qualification of the different magnetic assemblies was then performed by measuring the ion flux density reaching the surface of the sample to be coated using a commercial retarding field energy analyzer. The strongest unbalanced configuration shows an increase from 0.016 A.cm<sup>-2</sup> to 0.074 A.cm<sup>-2</sup> of the ion flux density reaching the sample surface compared to the standard balanced configuration for a pressure 5.10<sup>-3</sup> mbar and a plasma source power of 300 W. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ion%20energy%20distribution%20function" title="ion energy distribution function">ion energy distribution function</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=niobium" title=" niobium"> niobium</a>, <a href="https://publications.waset.org/abstracts/search?q=unbalanced" title=" unbalanced"> unbalanced</a>, <a href="https://publications.waset.org/abstracts/search?q=SRF%20cavities" title=" SRF cavities"> SRF cavities</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20film" title=" thin film"> thin film</a> </p> <a href="https://publications.waset.org/abstracts/44989/unbalanced-cylindrical-magnetron-for-accelerating-cavities-coating" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44989.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">256</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">118</span> Fabrication of Silicon Solar Cells Using All Sputtering Process </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ching-Hua%20Li">Ching-Hua Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Sheng-Hui%20Chen"> Sheng-Hui Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sputtering is a popular technique with many advantages for thin film deposition. To fabricate a hydrogenated silicon thin film using sputtering process for solar cell applications, the ion bombardment during sputtering will generate microstructures (voids and columnar structures) to form silicon dihydride bodings as defects. The properties of heterojunction silicon solar cells were studied by using boron grains and silicon-boron targets. Finally, an 11.7% efficiency of solar cell was achieved by using all sputtering process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20cell" title="solar cell">solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=sputtering%20process" title=" sputtering process"> sputtering process</a>, <a href="https://publications.waset.org/abstracts/search?q=pvd" title=" pvd"> pvd</a>, <a href="https://publications.waset.org/abstracts/search?q=alloy%20target" title=" alloy target"> alloy target</a> </p> <a href="https://publications.waset.org/abstracts/30724/fabrication-of-silicon-solar-cells-using-all-sputtering-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30724.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">580</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">117</span> A Neural Network System for Predicting the Hardness of Titanium Aluminum Nitrite (TiAlN) Coatings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omar%20M.%20Elmabrouk">Omar M. Elmabrouk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The cutting tool, in the high-speed machining process, is consistently dealing with high localized stress at the tool tip, tip temperature exceeds 800°C and the chip slides along the rake face. These conditions are affecting the tool wear, the cutting tool performances, the quality of the produced parts and the tool life. Therefore, a thin film coating on the cutting tool should be considered to improve the tool surface properties while maintaining its bulks properties. One of the general coating processes in applying thin film for hard coating purpose is PVD magnetron sputtering. In this paper, the prediction of the effects of PVD magnetron sputtering coating process parameters, sputter power in the range of (4.81-7.19 kW), bias voltage in the range of (50.00-300.00 Volts) and substrate temperature in the range of (281.08-600.00 °C), were studied using artificial neural network (ANN). The results were compared with previously published results using RSM model. It was found that the ANN is more accurate in prediction of tool hardness, and hence, it will not only improve the tool life of the tool but also significantly enhances the efficiency of the machining processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20network" title="artificial neural network">artificial neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=hardness" title=" hardness"> hardness</a>, <a href="https://publications.waset.org/abstracts/search?q=prediction" title=" prediction"> prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium%20aluminium%20nitrate%20coating" title=" titanium aluminium nitrate coating"> titanium aluminium nitrate coating</a> </p> <a href="https://publications.waset.org/abstracts/33962/a-neural-network-system-for-predicting-the-hardness-of-titanium-aluminum-nitrite-tialn-coatings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33962.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">554</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">116</span> Response Surface Methodology for Optimum Hardness of TiN on Steel Substrate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Joseph%20Raviselvan">R. Joseph Raviselvan</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Ramanathan"> K. Ramanathan</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Perumal"> P. Perumal</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Thansekhar"> M. R. Thansekhar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hard coatings are widely used in cutting and forming tool industries. Titanium Nitride (TiN) possesses good hardness, strength and corrosion resistant. The coating properties are influenced by many process parameters. The coatings were deposited on steel substrate by changing the process parameters such as substrate temperature, nitrogen flow rate and target power in a D.C planer magnetron sputtering. The structure of coatings were analysed using XRD. The hardness of coatings was found using Micro hardness tester. From the experimental data, a regression model was developed and the optimum response was determined using Response Surface Methodology (RSM). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hardness" title="hardness">hardness</a>, <a href="https://publications.waset.org/abstracts/search?q=RSM" title=" RSM"> RSM</a>, <a href="https://publications.waset.org/abstracts/search?q=sputtering" title=" sputtering"> sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=TiN%20XRD" title=" TiN XRD"> TiN XRD</a> </p> <a href="https://publications.waset.org/abstracts/42534/response-surface-methodology-for-optimum-hardness-of-tin-on-steel-substrate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42534.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">115</span> Strategies to Synthesize Ambient Stable Ultrathin Ag Film Supported on Oxide Substrate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Allamula%20Ashok">Allamula Ashok</a>, <a href="https://publications.waset.org/abstracts/search?q=Peela%20Lasya"> Peela Lasya</a>, <a href="https://publications.waset.org/abstracts/search?q=Daljin%20Jacob"> Daljin Jacob</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Muhammed%20Razi"> P. Muhammed Razi</a>, <a href="https://publications.waset.org/abstracts/search?q=Satyesh%20Kumar%20Yadav"> Satyesh Kumar Yadav</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We report zinc (Zn) as a seed layer material and a need for a specific disposition sequence to grow ultrathin silver (Ag) films on quartz (SiO₂). Ag films of thickness 4, 6, 8 and 10 nm were deposited by DC magnetron sputtering without and with Zn seed layer thickness of 1, 2 and 4 nm. The effect of Zn seed layer thickness and its annealing on the surface morphology, sheet resistance, and stability of ultrathin Ag films is investigated. We show that by increasing Zn seed layer thickness from 1 to 2 nm, there is a 5-order reduction in sheet resistance of 6 nm Ag films. We find that annealing of the seed layer is crucial to achieving stability of ultrathin Ag films. 6 nm Ag film with 2 nm Zn is unstable to 100 oC annealing, while the 6 nm Ag film with annealed 2 nm Zn seed layer is stable. 2 nm Zn seeded 8 nm Ag film maintained a constant sheet resistance of 7 Ω/□ for all 6 months of exposure to ambient conditions. Among the ultrathin film grown, 8nm Ag film with 2nm Zn seed layer had the best figure of merit with sheet resistance of 7 Ω/□, mean absolute surface roughness (Ra) ~1 nm, and optical transparency of 61 %. Such stable exposed ultrathin Ag films can find applications as catalysts, sensors, and transparent and conductive electrodes for solar cells, LEDs and plasmonic devices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrathin%20Ag%20films" title="ultrathin Ag films">ultrathin Ag films</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stability" title=" thermal stability"> thermal stability</a>, <a href="https://publications.waset.org/abstracts/search?q=seed%20layer" title=" seed layer"> seed layer</a>, <a href="https://publications.waset.org/abstracts/search?q=exposed%20silver" title=" exposed silver"> exposed silver</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc." title=" zinc."> zinc.</a> </p> <a href="https://publications.waset.org/abstracts/186459/strategies-to-synthesize-ambient-stable-ultrathin-ag-film-supported-on-oxide-substrate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186459.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">39</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">114</span> Benefits of High Power Impulse Magnetron Sputtering (HiPIMS) Method for Preparation of Transparent Indium Gallium Zinc Oxide (IGZO) Thin Films</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pavel%20Baroch">Pavel Baroch</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiri%20Rezek"> Jiri Rezek</a>, <a href="https://publications.waset.org/abstracts/search?q=Michal%20Prochazka"> Michal Prochazka</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomas%20Kozak"> Tomas Kozak</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiri%20Houska"> Jiri Houska</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transparent semiconducting amorphous IGZO films have attracted great attention due to their excellent electrical properties and possible utilization in thin film transistors or in photovoltaic applications as they show 20-50 times higher mobility than that of amorphous silicon. It is also known that the properties of IGZO films are highly sensitive to process parameters, especially to oxygen partial pressure. In this study we have focused on the comparison of properties of transparent semiconducting amorphous indium gallium zinc oxide (IGZO) thin films prepared by conventional sputtering methods and those prepared by high power impulse magnetron sputtering (HiPIMS) method. Furthermore we tried to optimize electrical and optical properties of the IGZO thin films and to investigate possibility to apply these coatings on thermally sensitive flexible substrates. We employed dc, pulsed dc, mid frequency sine wave and HiPIMS power supplies for magnetron deposition. Magnetrons were equipped with sintered ceramic InGaZnO targets. As oxygen vacancies are considered to be the main source of the carriers in IGZO films, it is expected that with the increase of oxygen partial pressure number of oxygen vacancies decreases which results in the increase of film resistivity. Therefore in all experiments we focused on the effect of oxygen partial pressure, discharge power and pulsed power mode on the electrical, optical and mechanical properties of IGZO thin films and also on the thermal load deposited to the substrate. As expected, we have observed a very fast transition between low- and high-resistivity films depending on oxygen partial pressure when deposition using conventional sputtering methods/power supplies have been utilized. Therefore we established and utilized HiPIMS sputtering system for enlargement of operation window for better control of IGZO thin film properties. It is shown that with this system we are able to effectively eliminate steep transition between low and high resistivity films exhibited by DC mode of sputtering and the electrical resistivity can be effectively controlled in the wide resistivity range of 10-² to 10⁵ Ω.cm. The highest mobility of charge carriers (up to 50 cm2/V.s) was obtained at very low oxygen partial pressures. Utilization of HiPIMS also led to significant decrease in thermal load deposited to the substrate which is beneficial for deposition on the thermally sensitive and flexible polymer substrates. Deposition rate as a function of discharge power and oxygen partial pressure was also systematically investigated and the results from optical, electrical and structure analysis will be discussed in detail. Most important result which we have obtained demonstrates almost linear control of IGZO thin films resistivity with increasing of oxygen partial pressure utilizing HiPIMS mode of sputtering and highly transparent films with low resistivity were prepared already at low pO2. It was also found that utilization of HiPIMS technique resulted in significant improvement of surface smoothness in reactive mode of sputtering (with increasing of oxygen partial pressure). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=charge%20carrier%20mobility" title="charge carrier mobility">charge carrier mobility</a>, <a href="https://publications.waset.org/abstracts/search?q=HiPIMS" title=" HiPIMS"> HiPIMS</a>, <a href="https://publications.waset.org/abstracts/search?q=IGZO" title=" IGZO"> IGZO</a>, <a href="https://publications.waset.org/abstracts/search?q=resistivity" title=" resistivity"> resistivity</a> </p> <a href="https://publications.waset.org/abstracts/65431/benefits-of-high-power-impulse-magnetron-sputtering-hipims-method-for-preparation-of-transparent-indium-gallium-zinc-oxide-igzo-thin-films" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65431.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">297</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">113</span> Deposition of Cr-doped ZnO Thin Films and Their Ferromagnetic Properties </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Namhyun%20An">Namhyun An</a>, <a href="https://publications.waset.org/abstracts/search?q=Byungho%20Lee"> Byungho Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Hwauk%20Lee"> Hwauk Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Youngmin%20Lee"> Youngmin Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Deuk%20Young%20Kim"> Deuk Young Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Sejoon%20Lee"> Sejoon Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the Cr-doped ZnO thin films have been deposited by reactive magnetron sputtering method with different Cr-contents (1.0at.%, 2.5at.% and 12.5at.%) and their ferromagnetic properties have been characterized. All films revealed clear ferromagnetism above room temperature. However, the spontaneous magnetization of the films was observed to depend on the Cr contents in the films. Namely, the magnitude of effective magnetic moment (per each Cr ion) was exponentially decreased with increasing the Cr contents. We attributed the decreased spontaneous magnetization to the degraded crystal magnetic anisotropy. In other words, we found out that the high concentration of magnetic ions causes the lattice distortion in the magnetic ion-doped thin film, and it consequently degrades ferromagnetic channeling in the solid-state material system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cr-doped%20ZnO" title="Cr-doped ZnO">Cr-doped ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=ferromagnetic%20properties" title=" ferromagnetic properties"> ferromagnetic properties</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetization" title=" magnetization"> magnetization</a>, <a href="https://publications.waset.org/abstracts/search?q=sputtering" title=" sputtering"> sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20film" title=" thin film "> thin film </a> </p> <a href="https://publications.waset.org/abstracts/45499/deposition-of-cr-doped-zno-thin-films-and-their-ferromagnetic-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45499.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">392</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">112</span> A 1T1R Nonvolatile Memory with Al/TiO₂/Au and Sol-Gel Processed Barium Zirconate Nickelate Gate in Pentacene Thin Film Transistor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ke-Jing%20Lee">Ke-Jing Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Jung%20Lee"> Cheng-Jung Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Chi%20Chang"> Yu-Chi Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Li-Wen%20Wang"> Li-Wen Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yeong-Her%20Wang"> Yeong-Her Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To avoid the cross-talk issue of only resistive random access memory (RRAM) cell, one transistor and one resistor (1T1R) architecture with a TiO₂-based RRAM cell connected with solution barium zirconate nickelate (BZN) organic thin film transistor (OTFT) device is successfully demonstrated. The OTFT were fabricated on a glass substrate. Aluminum (Al) as the gate electrode was deposited via a radio-frequency (RF) magnetron sputtering system. The barium acetate, zirconium n-propoxide, and nickel II acetylacetone were synthesized by using the sol-gel method. After the BZN solution was completely prepared using the sol-gel process, it was spin-coated onto the Al/glass substrate as the gate dielectric. The BZN layer was baked at 100 °C for 10 minutes under ambient air conditions. The pentacene thin film was thermally evaporated on the BZN layer at a deposition rate of 0.08 to 0.15 nm/s. Finally, gold (Au) electrode was deposited using an RF magnetron sputtering system and defined through shadow masks as both the source and drain. The channel length and width of the transistors were 150 and 1500 μm, respectively. As for the manufacture of 1T1R configuration, the RRAM device was fabricated directly on drain electrodes of TFT device. A simple metal/insulator/metal structure, which consisting of Al/TiO₂/Au structures, was fabricated. First, Au was deposited to be a bottom electrode of RRAM device by RF magnetron sputtering system. Then, the TiO₂ layer was deposited on Au electrode by sputtering. Finally, Al was deposited as the top electrode. The electrical performance of the BZN OTFT was studied, showing superior transfer characteristics with the low threshold voltage of −1.1 V, good saturation mobility of 5 cm²/V s, and low subthreshold swing of 400 mV/decade. The integration of the BZN OTFT and TiO₂ RRAM devices was finally completed to form 1T1R configuration with low power consumption of 1.3 μW, the low operation current of 0.5 μA, and reliable data retention. Based on the I-V characteristics, the different polarities of bipolar switching are found to be determined by the compliance current with the different distribution of the internal oxygen vacancies used in the RRAM and 1T1R devices. Also, this phenomenon can be well explained by the proposed mechanism model. It is promising to make the 1T1R possible for practical applications of low-power active matrix flat-panel displays. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=one%20transistor%20and%20one%20resistor%20%281T1R%29" title="one transistor and one resistor (1T1R)">one transistor and one resistor (1T1R)</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20thin-film%20transistor%20%28OTFT%29" title=" organic thin-film transistor (OTFT)"> organic thin-film transistor (OTFT)</a>, <a href="https://publications.waset.org/abstracts/search?q=resistive%20random%20access%20memory%20%28RRAM%29" title=" resistive random access memory (RRAM)"> resistive random access memory (RRAM)</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-gel" title=" sol-gel"> sol-gel</a> </p> <a href="https://publications.waset.org/abstracts/65265/a-1t1r-nonvolatile-memory-with-altio2au-and-sol-gel-processed-barium-zirconate-nickelate-gate-in-pentacene-thin-film-transistor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65265.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">354</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">111</span> Comparative Studies on Thin Film of ZnO Deposited by Spray Pyrolysis and Sputtering Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Musa%20Momoh">Musa Momoh</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20U.%20Moreh"> A. U. Moreh</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Bayawa"> A. M. Bayawa</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanusi%20Abdullahi"> Sanusi Abdullahi</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Atiku"> I. Atiku</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, thin films of ZnO were synthesized by two techniques namely RF sputtering and spray pyrolysis. The films were deposited on corning glass. The primary materials used are 99.99% pure. The optical and structural properties of the samples were studied. It has been noted that the samples deposited by Spray pyrolysis have and average transmittance, refractive index and extinction coefficient as 80-90%, 1.33-1.44 and 13.11-27.52 respectively. Those deposited by sputtering method are 34-80%, 1.51-1.52 and 3.15-3.28. The XRD patterns of the samples show that they are polycrystalline. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=zinc%20oxide" title="zinc oxide">zinc oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=spray%20pyrolysis" title=" spray pyrolysis"> spray pyrolysis</a>, <a href="https://publications.waset.org/abstracts/search?q=rf%20sputtering" title=" rf sputtering"> rf sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20properties" title=" optical properties"> optical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=electrical%20properties" title=" electrical properties"> electrical properties</a> </p> <a href="https://publications.waset.org/abstracts/54183/comparative-studies-on-thin-film-of-zno-deposited-by-spray-pyrolysis-and-sputtering-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54183.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">266</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">110</span> Al-Ti-W Metallic Glass Thin Films Deposited by Magnetron Sputtering Technology to Protect Steel Against Hydrogen Embrittlement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Issam%20Lakdhar">Issam Lakdhar</a>, <a href="https://publications.waset.org/abstracts/search?q=Akram%20Alhussein"> Akram Alhussein</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Creus"> Juan Creus</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the huge increase in world energy consumption, researchers are working to find other alternative sources of energy instead of fossil fuel one causing many environmental problems as the production of greenhouse effect gases. Hydrogen is considered a green energy source, which its combustion does not cause environmental pollution. The transport and the storage of the gas molecules or the other products containing this smallest chemical element in metallic structures (pipelines, tanks) are crucial issues. The dissolve and the permeation of hydrogen into the metal lattice lead to the formation of hydride phases and the embrittlement of structures. To protect the metallic structures, a surface treatment could be a good solution. Among the different techniques, magnetron sputtering is used to elaborate micrometric coatings capable of slowing down or stop hydrogen permeation. In the plasma environment, the deposition parameters of new thin-film metallic glasses Al-Ti-W were optimized and controlled in order to obtain, hydrogen barrier. Many characterizations were carried out (SEM, XRD and Nano-indentation…) to control the composition and understand the influence of film microstructure and chemical composition on the hydrogen permeation through the coatings. The coating performance was evaluated under two hydrogen production methods: chemical and electrochemical (cathodic protection) techniques. The hydrogen quantity absorbed was experimentally determined using the Thermal-Desorption Spectroscopy method (TDS)). An ideal ATW thin film was developed and showed excellent behavior against the diffusion of hydrogen. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thin%20films" title="thin films">thin films</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen" title=" hydrogen"> hydrogen</a>, <a href="https://publications.waset.org/abstracts/search?q=PVD" title=" PVD"> PVD</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20technology" title=" plasma technology"> plasma technology</a>, <a href="https://publications.waset.org/abstracts/search?q=electrochemical%20properties" title=" electrochemical properties"> electrochemical properties</a> </p> <a href="https://publications.waset.org/abstracts/141670/al-ti-w-metallic-glass-thin-films-deposited-by-magnetron-sputtering-technology-to-protect-steel-against-hydrogen-embrittlement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/141670.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">184</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">109</span> Improved Qualitative Modeling of the Magnetization Curve B(H) of the Ferromagnetic Materials for a Transformer Used in the Power Supply for Magnetron</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Bassoui">M. Bassoui</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Ferfra"> M. Ferfra</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Chrayagne"> M. Chrayagne</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a qualitative modeling for the nonlinear B-H curve of the saturable magnetic materials for a transformer with shunts used in the power supply for the magnetron. This power supply is composed of a single phase leakage flux transformer supplying a cell composed of a capacitor and a diode, which double the voltage and stabilize the current, and a single magnetron at the output of the cell. A procedure consisting of a fuzzy clustering method and a rule processing algorithm is then employed for processing the constructed fuzzy modeling rules to extract the qualitative properties of the curve. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=B%28H%29%20curve" title="B(H) curve">B(H) curve</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20clustering" title=" fuzzy clustering"> fuzzy clustering</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron" title=" magnetron"> magnetron</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20supply" title=" power supply"> power supply</a> </p> <a href="https://publications.waset.org/abstracts/59538/improved-qualitative-modeling-of-the-magnetization-curve-bh-of-the-ferromagnetic-materials-for-a-transformer-used-in-the-power-supply-for-magnetron" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59538.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">236</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">108</span> Magnetron Sputtered Thin-Film Catalysts with Low Noble Metal Content for Proton Exchange Membrane Water Electrolysis </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peter%20Kus">Peter Kus</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Ostroverkh"> Anna Ostroverkh</a>, <a href="https://publications.waset.org/abstracts/search?q=Yurii%20Yakovlev"> Yurii Yakovlev</a>, <a href="https://publications.waset.org/abstracts/search?q=Yevheniia%20Lobko"> Yevheniia Lobko</a>, <a href="https://publications.waset.org/abstracts/search?q=Roman%20Fiala"> Roman Fiala</a>, <a href="https://publications.waset.org/abstracts/search?q=Ivan%20Khalakhan"> Ivan Khalakhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20Matolin"> Vladimir Matolin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hydrogen economy is a concept of low-emission society which harvests most of its energy from renewable sources (e.g., wind and solar) and in case of overproduction, electrochemically turns the excess amount into hydrogen, which serves as an energy carrier. Proton exchange membrane water electrolyzers (PEMWE) are the backbone of this concept. By fast-response electricity to hydrogen conversion, the PEMWEs will not only stabilize the electrical grid but also provide high-purity hydrogen for variety of fuel cell powered devices, ranging from consumer electronics to vehicles. Wider commercialization of PEMWE technology is however hindered by high prices of noble metals which are necessary for catalyzing the redox reactions within the cell. Namely, platinum for hydrogen evolution reaction (HER), running on cathode, and iridium for oxygen evolution reaction (OER) on anode. Possible way of how to lower the loading of Pt and Ir is by using conductive high-surface nanostructures as catalyst supports in conjunction with thin-film catalyst deposition. The presented study discusses unconventional technique of membrane electron assembly (MEA) preparation. Noble metal catalysts (Pt and Ir) were magnetron sputtered in very low loadings onto the surface of porous sublayers (located on gas diffusion layer or directly on membrane), forming so to say localized three-phase boundary. Ultrasonically sprayed corrosion resistant TiC-based sublayer was used as a support material on anode, whereas magnetron sputtered nanostructured etched nitrogenated carbon (CNx) served the same role on cathode. By using this configuration, we were able to significantly decrease the amount of noble metals (to thickness of just tens of nanometers), while keeping the performance comparable to that of average state-of-the-art catalysts. Complex characterization of prepared supported catalysts includes in-cell performance and durability tests, electrochemical impedance spectroscopy (EIS) as well as scanning electron microscopy (SEM) imaging and X-ray photoelectron spectroscopy (XPS) analysis. Our research proves that magnetron sputtering is a suitable method for thin-film deposition of electrocatalysts. Tested set-up of thin-film supported anode and cathode catalysts with combined loading of just 120 ug.cm⁻² yields remarkable values of specific current. Described approach of thin-film low-loading catalyst deposition might be relevant when noble metal reduction is the topmost priority. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20economy" title="hydrogen economy">hydrogen economy</a>, <a href="https://publications.waset.org/abstracts/search?q=low-loading%20catalyst" title=" low-loading catalyst"> low-loading catalyst</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=proton%20exchange%20membrane%20water%20electrolyzer" title=" proton exchange membrane water electrolyzer"> proton exchange membrane water electrolyzer</a> </p> <a href="https://publications.waset.org/abstracts/89600/magnetron-sputtered-thin-film-catalysts-with-low-noble-metal-content-for-proton-exchange-membrane-water-electrolysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89600.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">163</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">107</span> The Effect of Aging of ZnO, AZO, and GZO films on the Microstructure and Photoelectric Property</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zue-Chin%20Chang">Zue-Chin Chang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> RF magnetron sputtering is used on the ceramic targets, each of which contains zinc oxide (ZnO), zinc oxide doped with aluminum (AZO) and zinc oxide doped with gallium (GZO). The XRD analysis showed a preferred orientation along the (002) plane for ZnO, AZO, and GZO films. The AZO film had the best electrical properties; it had the lowest resistivity of 6.6 × 10-4 cm, the best sheet resistance of 2.2 × 10-1 Ω/square, and the highest carrier concentration of 4.3 × 1020 cm-3, as compared to the ZnO and GZO films. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aging" title="aging">aging</a>, <a href="https://publications.waset.org/abstracts/search?q=films" title=" films"> films</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=photoelectric%20property" title=" photoelectric property"> photoelectric property</a> </p> <a href="https://publications.waset.org/abstracts/23459/the-effect-of-aging-of-zno-azo-and-gzo-films-on-the-microstructure-and-photoelectric-property" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23459.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">476</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">106</span> Use of Metallic and Bimetallic Nanostructures as Constituents of Active Bio-Based Films</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lina%20F.%20Ballesteros">Lina F. Ballesteros</a>, <a href="https://publications.waset.org/abstracts/search?q=Hafsae%20Lamsaf"> Hafsae Lamsaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Miguel%20A.%20Cerqueira"> Miguel A. Cerqueira</a>, <a href="https://publications.waset.org/abstracts/search?q=Lorenzo%20M.%20Pastrana"> Lorenzo M. Pastrana</a>, <a href="https://publications.waset.org/abstracts/search?q=Sandra%20Carvalho"> Sandra Carvalho</a>, <a href="https://publications.waset.org/abstracts/search?q=Jose%20A.%20Teixeira"> Jose A. Teixeira</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Calderon%20V."> S. Calderon V.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of bio-based packaging materials containing metallic and bimetallic nanostructures is relatively modern technology. In this sense, the food packaging industry has been investigating biological and renewable resources that can replace petroleum-based materials to reduce the environmental impact and, at the same time, including new functionalities using nanotechnology. Therefore, the main objective of the present work consisted of developing bio-based poly-lactic acid (PLA) films with Zinc (Zn) and Zinc-Iron (Zn-Fe) nanostructures deposited by magnetron sputtering. The structural, antimicrobial, and optical properties of the films were evaluated when exposed at 60% and 96% relative humidity (RH). The morphology and elemental analysis of the samples were determined by scanning (transmission) electron microscopy (SEM and STEM), and inductively coupled plasma optical emission spectroscopy (ICP-OES). The structure of the PLA was monitored before and after deposition by Fourier transform infrared spectroscopy (FTIR) analysis, and the antimicrobial and color assays were performed by using the zone of inhibition (ZOI) test and a Minolta colorimeter, respectively. Finally, the films were correlated in terms of the deposit conditions, Zn or Zn-Fe concentrations, and thickness. The results revealed PLA films with different morphologies, compositions, and thicknesses of Zn or Zn-Fe nanostructures. The samples showed a significant antibacterial and antifungal activity against E. coli, P. aeruginosa, P. fluorescens, S. aureus, and A. niger, and considerable changes of color and opacity at 96% RH, especially for the thinner nanostructures (150-250 nm). On the other hand, when the Fe fraction was increased, the lightness of samples increased, as well as their antimicrobial activity when compared to the films with pure Zn. Hence, these findings are relevant to the food packaging field since intelligent and active films with multiple properties can be developed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biopolymers" title="biopolymers">biopolymers</a>, <a href="https://publications.waset.org/abstracts/search?q=functional%20properties" title=" functional properties"> functional properties</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=Zn%20and%20Zn-Fe%20nanostructures" title=" Zn and Zn-Fe nanostructures"> Zn and Zn-Fe nanostructures</a> </p> <a href="https://publications.waset.org/abstracts/135084/use-of-metallic-and-bimetallic-nanostructures-as-constituents-of-active-bio-based-films" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135084.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">121</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">105</span> Highly Sensitive and Selective H2 Gas Sensor Based on Pd-Pt Decorated Nanostructured Silicon Carbide Thin Films for Extreme Environment Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Satyendra%20Mourya">Satyendra Mourya</a>, <a href="https://publications.waset.org/abstracts/search?q=Jyoti%20Jaiswal"> Jyoti Jaiswal</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaurav%20Malik"> Gaurav Malik</a>, <a href="https://publications.waset.org/abstracts/search?q=Brijesh%20Kumar"> Brijesh Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramesh%20Chandra"> Ramesh Chandra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Present work describes the fabrication and sensing characteristics of the Pd-Pt decorated nanostructured silicon carbide (SiC) thin films on anodized porous silicon (PSi) substrate by RF magnetron sputtering. The gas sensing performance of Pd-Pt/SiC/PSi sensing electrode towards H2 gas under low (10–400 ppm) detection limit and high operating temperature regime (25–600 °C) were studied in detail. The chemiresistive sensor exhibited high selectivity, good sensing response, fast response/recovery time with excellent stability towards H2 at high temperature. The selectivity measurement of the sensing electrode was done towards different oxidizing and reducing gases and proposed sensing mechanism discussed in detail. Therefore, the investigated Pd-Pt/SiC/PSi structure may be a highly sensitive and selective hydrogen gas sensing electrode for deployment in extreme environment applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=RF%20Sputtering" title="RF Sputtering">RF Sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=silicon%20carbide" title=" silicon carbide"> silicon carbide</a>, <a href="https://publications.waset.org/abstracts/search?q=porous%20silicon" title=" porous silicon"> porous silicon</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen%20gas%20sensor" title=" hydrogen gas sensor"> hydrogen gas sensor</a> </p> <a href="https://publications.waset.org/abstracts/93164/highly-sensitive-and-selective-h2-gas-sensor-based-on-pd-pt-decorated-nanostructured-silicon-carbide-thin-films-for-extreme-environment-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/93164.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">306</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">104</span> Adhesion Enhancement of Boron Carbide Coatings on Aluminum Substrates Utilizing an Intermediate Adhesive Layer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sharon%20Waichman">Sharon Waichman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahaf%20Froim"> Shahaf Froim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ido%20Zukerman"> Ido Zukerman</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmuel%20Barzilai"> Shmuel Barzilai</a>, <a href="https://publications.waset.org/abstracts/search?q=Shmual%20Hayun"> Shmual Hayun</a>, <a href="https://publications.waset.org/abstracts/search?q=Avi%20Raveh"> Avi Raveh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boron carbide is a ceramic material with superior properties such as high chemical and thermal stability, high hardness and high wear resistance. Moreover, it has a big cross section for neutron absorption and therefore can be employed in nuclear based applications. However, an efficient attachment of boron carbide to a metal such as aluminum can be very challenging, mainly because of the formation of aluminum-carbon bonds that are unstable in humid environment, the affinity of oxygen to the metal and the different thermal expansion coefficients of the two materials that may cause internal stresses and a subsequent failure of the bond. Here, we aimed to achieving a strong and a durable attachment between the boron carbide coating and the aluminum substrate. For this purpose, we applied Ti as a thin intermediate layer that provides a gradual change in the thermal expansion coefficients of the configured layers. This layer is continuous and therefore prevents the formation of aluminum-carbon bonds. Boron carbide coatings with a thickness of 1-5 µm were deposited on the aluminum substrate by pulse-DC magnetron sputtering. Prior to the deposition of the boron carbide layer, the surface was pretreated by energetic ion plasma followed by deposition of the Ti intermediate adhesive layer in a continuous process. The properties of the Ti intermediate layer were adjusted by the bias applied to the substrate. The boron carbide/aluminum bond was evaluated by various methods and complementary techniques, such as SEM/EDS, XRD, XPS, FTIR spectroscopy and Glow Discharge Spectroscopy (GDS), in order to explore the structure, composition and the properties of the layers and to study the adherence mechanism of the boron carbide/aluminum contact. Based on the interfacial bond characteristics, we propose a desirable solution for improved adhesion of boron carbide to aluminum using a highly efficient intermediate adhesive layer. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adhesion" title="adhesion">adhesion</a>, <a href="https://publications.waset.org/abstracts/search?q=boron%20carbide%20coatings" title=" boron carbide coatings"> boron carbide coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=ceramic%2Fmetal%20bond" title=" ceramic/metal bond"> ceramic/metal bond</a>, <a href="https://publications.waset.org/abstracts/search?q=intermediate%20layer" title=" intermediate layer"> intermediate layer</a>, <a href="https://publications.waset.org/abstracts/search?q=pulsed-DC%20magnetron%20sputtering" title=" pulsed-DC magnetron sputtering"> pulsed-DC magnetron sputtering</a> </p> <a href="https://publications.waset.org/abstracts/107246/adhesion-enhancement-of-boron-carbide-coatings-on-aluminum-substrates-utilizing-an-intermediate-adhesive-layer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107246.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">164</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">103</span> Microstructure, Mechanical and Tribological Properties of (TiTaZrNb)Nx Medium Entropy Nitride Coatings: Influence of Nitrogen Content and Bias Voltage</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mario%20Alejandro%20Grisales">Mario Alejandro Grisales</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Daniela%20Chim%C3%A1"> M. Daniela Chimá</a>, <a href="https://publications.waset.org/abstracts/search?q=Gilberto%20Bejarano%20Gait%C3%A1n"> Gilberto Bejarano Gaitán</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High entropy alloys (HEA) and nitride (HEN) are currently very attractive to the automotive, aerospace, metalworking and materials forming manufacturing industry, among others, for exhibiting higher mechanical properties, wear resistance, and thermal stability than binary and ternary alloys. In this work medium-entropy coatings of TiTaZrNb and the nitrides of (TiTaZrNb)Nx were synthesized on to AISI 420 and M2 steel samples by the direct current magnetron sputtering technique. The influence of the bias voltage supplied to the substrate on the microstructure, chemical- and phase composition of the matrix coating was evaluated, and the effect of nitrogen flow on the microstructural, mechanical and tribological properties of the corresponding nitrides was studied. A change in the crystalline structure from BCC for TiTaZrNb coatings to FCC for (TiTaZrNb)Nx was observed, that is associated with the incorporation of nitrogen into the matrix and the consequent formation of a solid solution of (TiTaZrNb)Nx. An increase in hardness and residual stresses was observed with increasing bias voltage for TiTaZrNb, reaching 12.8 GPa for the coating deposited with a bias of -130V. In the case of (TiTaZrNb)Nx nitride, a greater hardness of 23 GPa is achieved for the coating deposited with a N2 flow of 12 sccm, which slightly drops to 21.7 GPa for that deposited with N2 flow of 15 sccm. The slight reduction in hardness could be associated with the precipitation of the TiN and ZrN phases that are formed at higher nitrogen flows. The specific wear rate of the deposited coatings ranged between 0.5xexp13 and 0.6xexp13 N/m2. The steel substrate exhibited an average hardness of 2.0 GPa and a specific wear rate of 203.2exp13 N/m2. Both the hardness and the specific wear rate of the synthesized nitride coatings were higher than that of the steel substrate, showing a protective effect of the steel against wear. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medium%20entropy%20coatings" title="medium entropy coatings">medium entropy coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=hard%20coatings" title=" hard coatings"> hard coatings</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering" title=" magnetron sputtering"> magnetron sputtering</a>, <a href="https://publications.waset.org/abstracts/search?q=tribology" title=" tribology"> tribology</a>, <a href="https://publications.waset.org/abstracts/search?q=wear%20resistance" title=" wear resistance"> wear resistance</a> </p> <a href="https://publications.waset.org/abstracts/165184/microstructure-mechanical-and-tribological-properties-of-titazrnbnx-medium-entropy-nitride-coatings-influence-of-nitrogen-content-and-bias-voltage" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165184.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">72</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=magnetron%20sputtering&page=3">3</a></li> <li class="page-item"><a class="page-link" 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