Materials Literature
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Helium contents of up to 30at.% are prepared in sputter-deposited Ti films. Isochronal annealing behaviors of helium including the depth profiles and the evolution of helium bubbles in the films at different temperatures are examined by ion beam analysis including Rutherford backscattering spectrometry (RBS) and elast…
In this paper, comparative study of plasmonic effect of silver nanoparticles (Ag NPs) sandwiched between Si3N4 and SiO2 structures on c-Si photoactive absorbing material is presented. For comparative study, four different types of architectures were prepared. Si3N4 and SiO2 layers were deposited by inductively coupled…
An accurate method is described for determining dopant profiles of laser-doped areas on multicrystalline silicon wafers from electrochemical capacitance-voltage measurements. The method is based on the calibration of dopant profiles using the combination of contact area and depth measurements of the etched area and is…
SINGULAR is a multi chamber PECVD production tool, which allows depositing single and multi layers of different materials on silicon solar wafers using inductively coupled plasma (ICP). One of the major features of the ICP technology is the high plasma density at low kinetic ion energy. These plasma properties are ide…
Like most of the new technologies designed to interact with biological systems, the applications of -nanomaterials needs a proper assessment for their potential impacts. It is only through addressing the issues raised by toxicological studies that nanotechnology will be able to acquire its full potential. Here, we des…
This study has evaluated the role of ammo acid - chromium complexation in Glucose Tolerance factor (GTF from yeast has long been known to have trivalent chromium presumably complexed to several amino acid residues but structural details have remained elusive. In this investigation, AA.Cr (AA=amino acid, AA:Cr3+ =1:1)…
In this work, we investigate the surface passivation of n+ and p+ emitters by SiOx/AlOx stacks deposited by inline plasma-enhanced chemical vapour deposition (PECVD) in a fully industrial process. We show that the SiOx/AlOx stacks provide an excellent level of surface passivation on both p+ and n+ emitters with variou…
Investigations on brazing of titanium alloy samples by using different compositions of aluminium filler alloys were carried out. Silicon-free aluminium filler alloys were found to be acceptable for producing the brazed joints on titanium alloys. The 670—690 °C brazing temperature range is optimal for the selected fill…
Widely used into Provencal building heritage, the Pierre du Midi shows a heterogeneous durability in situ. While some historical buildings made up with this Burdigalian (Miocene) limestone do not display any superficial modification, others show specific stone deterioration pattern called spalling after comparable tim…
Clothing process is thought to be the cleanest process among the textile manufacturing methods. In the present study the environmental impacts of clothing processes were investigated using Life Cycle Assessment Methodology. According to the results, sewing process was the main responsible of the almost all impact cate…
The automobile industry has shown increased interest in the replacement of steel spring with different materials like aluminium foam, fibreglass, composite leaf spring due to high strength to weight ratio. This research work describes about the development of porous Aluminium foam for making commercial vehicle leaf sp…
Abstract: The influence of starting carbon materials on the synthesis of carbon nanotubes (CNTs) is investigated. Comparisons are made between graphite rods and polycyclic aromatic hydrocarbons (PAHs) as carbon sources in helium arc discharge. The major parameters are also evaluated in order to obtain high-yield and h…
conducted on uncoated as well as plasma sprayed coated samples. The erosion experiments are carried out using an air-jet erosion tester at impingement angles of 60 and 90°. Alumina particles of size 50µm are used as erodent. The coatings have been characterized by X-ray diffract meter (XRD), scanning electron microsco…
To elucidation the mechanisms of cubanite formation, a sample composed of Fe 33.3, Cu 16.7, S 50.0 at.% is subjected to quasi-equilibrium directional crystallization. The crystallized ingot consisted of three parts: (1) a pyrrhotine solid solution (poss), (2) a cubanite (cb), and (3) poss + cb? Curves of the component…
In this work we have studied the p-type cuprous oxide (Cu 2O) thin film fabricated with thermal oxidation and spray pyrolysis techniques. Cuprous oxide layer was prepared by thermal oxidation method inside a furnace in the temperature range of 930 °C - 1010 °C. X-ray diffraction studies revealed the formation of singl…
A project to install collimators in the dispersion suppressor regions of the LHC was launched early 2010, aiming to reduce the power deposition in superconducting magnets by a factor of 10. To be placed in the continuous arc cryostat, the design of such collimators had to comply with challenging integration, functiona…
This study deals with physical mechanisms of cleavage cracks and criteria related to brittle fracture. This work tends to put a slant on scientific tools and methodologies to improve the propagation and crack arrest topic. Experiments and Scanning Electron Microscope fracture surface analyses were carried out on Compa…
Base positions of crystallography of polytypic carbide of silicon are considered. Influence of different technological factors is shown such as: temperature, maintenance of admixtures and terms of forming of crystals on polytypic composition of material. X-ray structure studies of industrial and experience carbide of…
This project includes RSOFC materials development, and reversible stack design, and demonstration. The project objectives include meeting the following performance and endurance targets in a kW-class RSOFC stack demonstration: RSOFC dual-mode operation of 1,500 hours with more • than 10 SOFC/solid oxide electrolysis c…
Abstract: Nanoparticles of nickel substituted cobalt ferrite have been synthesized in presence hexa-decyl trimethyl ammonium bromide (HTAB) as a surfactant by co-precipitation route. The particle size was estimated by the full width half maximum (FWHM) of the strongest X-ray diffraction (XRD) peak. The average particl…