The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Fe3+/TiO2@Fe3O4 magnetic nanocompsites with 0.1–1 at% of Fe3+ content were synthesised by sol–gel method. The surface morphology, structure and crystalline phase of the nanocomposite were characterised by using XRD, SEM, HRTEM, EDX, BET, Diffuse reflectance spectroscopy (DRS) and VSM techniques. Photocatalytic activity experiments confirmed that as-prepared nanocomposite had good photodegradating...
Cadmium telluride (CdTe) nanowires were grown on silicon substrate (100) by thermal evaporation method. The synthesised CdTe nanowires were characterised by X-ray diffraction, field emission scanning electron microscope, energy-dispersive analysis of X-ray, and photoluminescence techniques. The field emission characteristics have been investigated at room temperature. The J–E and I–t characteristics...
A simple process is presented for the preparation of TiO2 nanoparticles by Co-precipitation method. This process is relatively cheaper and by using different variation we can control particle size and shape. TiCl4 was used as primary precursor along with Na2CO3 for synthesis of Rutile nanoparticles. Synthesis was done with and without modifier. Structural characterizations of samples were performed...
In this work a very low cost and conventional technique was used to prepare Ge nano/microstructures by means of filling the material inside porous silicon (PS) using thermal evaporator. PS was prepared by anodization of Si wafer in ethanoic hydrofluoric acid (HF).The Ge layer was deposited onto the PS by thermal evaporation.Subsequent annealing at 650°C and 750 C for 30 mins were done to drive in...
Indium doped ZnO nanowires were synthesized by carbothermal reduction method in a quartz tube. The nanowires were characterized by FESEM for morphological structure, the results showed a hexagonal structure with diameter around 40 - 100 nm, and lengths from hundreds of nanometers to a few microns. EDX was also used for materials composition and all the composition were found in the spectrum. XRD was...
Fabrication and characterization of hydroxyapatite-forsterite-bioactive glass nanocomposite coating was the aim of this work. The sol-gel technique was used to perform hydroxyapatite-forsterite-bioactive glass nanocomposite coating on 316L stainless steel (SS). The X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) techniques were used to investigate...
Summary form only given. Large scale SiC/SiO2 nanowires have been synthesized on Si (100) by the reaction of methane with silica using iron as catalyst. The growth time was 10 mins and the growth temperature was around 1,250°C in a normal atmospheric pressure. Detailed investigation with scanning electron microscopy (SEM), energy-dispersed X-ray (EDX), X-ray diffraction (XRD) and transmission electron...
SnCu2-4Ni1-2 as a lead-free solder was prepared from both sulfate and chloride plating solutions by galvanostatic electrodeposition. Current-potential polarizations for both plating baths were obtained with their respective deposition rates measured. Characterizations including SEM, EDX, and XRD were carried out to obtain relevant materials properties.
Polycrystalline films of semiconducting Cu(In1-xGax)Se2 (CIGS) quaternary alloy, one of the promising materials for photovoltaic applications, have been prepared by means of chemical spray pyrolysis (CSP). Copper, Indium and Gallium metal chlorides and Selenourea are used as constituent elements to prepare spray solution. Single phase CIGS films with chalcopyrite structure have been successfully grown...
Single crystals of bismuth ferrite-lead titanate (BFPT) were grown using a flux method. Starting from bismuth ferrite, we added lead titanate, to produce a range of compositions within the BiFeO3-PbTiO3 solid solution, through to the morphotropic phase boundary (MPB). Using a PbO:Bi2O3 flux, and a cooling rate of 0.5°C/h over the temperature range where crystal growth is expected, our aim was to produce...
This paper reported the study of growth of AlxGa1-xN thin film on a-plane sapphire substrate using plasma assisted metal organic chemical vapor deposition (PA-MOCVD). We have successfully growth the Al content AlGaN alloys and investigated the influence of TMA/TMAl+TMGa flow rate ratio to their crystal structure and surface morphology. From S EM image and XRD measurement, the AlGaN films grown with...
In this work, the effect of substrate position on the formation of ZnO nanostructures synthesized by thermal evaporation of zinc oxide (ZnO) and carbon nanotubes (CNTs) on silicon substrate is investigated. The multi-wall CNT powder made by chemical vapor deposition was mixed with ZnO powder with a molar ratio of 1:1. The source material was put into the middle of chamber while Si substrates were...
An amorphous silicon suboxide was synthesized by co-sputtering of Au and SiO2 using RF magnetron sputtering. The extracted data from XRD, SEM as well as EDX were utilized to characterize the surface of the thin film samples.
Al-doped ZnO (AZO) thin films were prepared using simple, flexible and cost-effective ultrasonic spray pyrolysis (USP) technique at different substrate temperatures. Zinc acetate dehydrate (Zn (CH3COO)2.2H2O) and Aluminum acetylacetonate (C15H21AlO6) were used as precursors and the solvent was a mixture of de-ionized water, methanol and acetic acid. Substrate temperatures are varied for 3 at% Al-doped...
Reaction of indium (In) and silver (Ag) during the electroplating process of indium over thick silver layer was investigated. It is found that the plated In atoms reacts with Ag to form AgIn2 intermetallic compound at room temperature. Indium is commonly used in electronic industries to bond delicate devices due to its unique ductility and low melting temperature. In this study, copper (Cu) substrates...
Pure and ZnO-Ti mixed nanowires were synthesized on a p-type silicon wafer. ZnO powder and Ti were mixed and mechanically milled in a ball milling machine. ZnO-Ti mixed nanowires were grown from the milled powder by using thermal evaporation method. Pure and ZnO-Ti mixed nanowires were grown by vapor solid method, using a furnace at 1000degC on a p-type silicon wafer. Characterizations have been done...
In this paper the response of printed thick-film of WO3 doped by Y2O3 to organic solvent was studied. Different ratio of doping was prepared and changes of film resistance at different temperature in present of vaporized types of alcohol were observed. The results showed a high sensitivity of the film of 80.1%WO3-18.8%Y2O3 to Toluene, Xylene, Methanol, and 2-Propanone (Acetone) at 250, 450, and 550degC,...
Summary form only given. Among other features, the plasma focus (PF) is a well known source of energetic ion beams, of characteristic energy from hundreds of keV to tens of MeV. We have previously characterized the main features of ion beam emission in a low energy, 1.8 kJ, 160 kA Mather type PF device operating in methane. There we found that for the operational conditions of the PF, the dominant...
The antibacterial behaviour of ZnO nanopowder and their composite coatings were investigated against E. Coli. ZnO nanopowder and Aluminum based ZnO composite powders were synthesized using in-house powder processing techniques. Bacteria culture results showed that ZnO nanopowder and their composite powders displayed excellent bacteriostatic activity against E. coli. The antibacterial activity increased...
In-based solders were chosen for the low temperature bonding at lower than 180degC. Three kinds of bonding types on Au/Cu/Ti/SiO2/Si dies, which were Sn/In and Au/In for Type 1, Au/In and Au/Sn for Type 2, and InSn alloy and InSn alloy for Type 3, were studied expecting that the whole In- solder layer is converted to the mixed intermetallic compound (IMC) phases of In-Cu and In-Au IMCs after bonding...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.