Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 113 for “"energy dispersive spectroscopy"”.
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Dispersion and Integration of Dopants by Mechanical Alloying in Complex Hydrogen Storage Materials
… was obtained in the MgH 2 + Si system using energy dispersive spectroscopy and electron diffraction. In addition, particle sizes were calculated for catalysts added to this system, and electron tomography was applied to determine the three-dimensional catalyst dispersion. In the kinetically …
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QUANTIFICATION OF LOW ENERGY X-RAY DETECTION IN EDS DETECTORS
A new approach to characterize low energy performance of energy dispersive spectroscopy (EDS) detectors for application in scanning electron microscopy is proposed. In this approach an empirical parameter is computed from the x-ray spectra. This parameter represents absorption of lower energy …
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Low energy ion beam modification of the titanium silicide (100) reaction
… transmission electron microscopy, Auger electron spectroscopy, x-ray energy dispersive spectroscopy, and x-ray diffraction. The ion assisted deposition parameters which were investigated in this study include: ion energy, ion flux, ion to depositing atom ratio, evaporant atom flux, deposition …
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Single Step Synthesis of Antibiotic Kanamycin Embedded Gold Nanoparticles for Efficient Antibacterial Activity
… like Transmission Electron Microscopy (TEM), Energy Dispersive Spectroscopy (EDS), Fourier Transform Infrared Spectroscopy (FTIR), and Ultra-Voilet/Visible spectroscopy (UV/Vis spectroscopy). The following research is a direct bio-friendly embedment of an antibiotic agent on the surface of the …
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Investigating Microbial Trace-fossils and Abiotic Alteration in Hydrovolcanic Tuffs of the Fort Rock Volcanic Field, Oregon
… powder X-ray diffraction, SEM/BSE/EDF imaging, energy dispersive spectroscopy, stable isotopes, and X-ray fluorescence. Petrographic analysis revealed granular and tubular textures with biogenic morphologies that include terminal enlargements, septate divisions, branching forms, spiral …
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Thermomechanical property evaluation of molybdenum alloys
… using Scanning Electron Microscope (SEM) and Energy Dispersive Spectroscopy (EDS) and the micro cracks were detected, which were developed due to the thermal stresses.
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Effects Of Bond Coat Surface Preparation On Thermal Cycling Lifetime And Failure Characteristics Of Thermal Barrier Coatings
… (OPM), photo-stimulated luminescence spectroscopy (PSLS), optical microscopy, scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS), and scanning/transmission electron microscopy (TEM/STEM) equipped with high angle annular dark field (HAADF) and X-ray …
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Synthesis And Polymerization Of Bifunctional Five-membered Cyclic Dithiocarbonates And Their Use As Stabilizers For Magnetic Nan
… and carbon nuclear magnetic resonance (NMR) spectroscopy, gas chromatography-mass spectroscopy, and Fourier transmission infrared (FTIR) spectroscopy. The polyaddition polymerization of 1,3-oxathiolane-2-thione with 1,4-diaminobutane at room temperature resulted in a poly(thiourethane) …
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Investigation into coatings produced from nanoparticle blended feedstock for rotating equipment repair applications
… Electron Microscope (SEM), Optical Microscope, Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD). The indentation tests are carried out to assess the microhardness variation across the coatings. In the case of coatings produced by GMAW, it is found that fine structures are formed in …
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Electrochemical synthesis of functional nanowires
… deposition of CdSe nanowires was confirmed by energy dispersive spectroscopy (EDS) analysis, with an average Cd:Se atomic percentage of0.92. Structural characterizations were done on the synthesized nanowires via scanning electron microscopy (SEM), transmission electron microscopy (TEM), and …
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Correlative elemental and electrical micro-analysis of laser fired contacts in silicon solar cells
Photovoltaic (PV) energy is an abundant and clean alternative to conventional energy sources, which pose an irreversible threat to the environment. For PV to reach cost parity with conventional energy, advances like laser-fired contacts must be adopted to improve cost levers like solar cell …
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Effect of Chemistry on the Transformation of Austenite to Martensite for Intercritically Austempered Ductile Iron
… imaging in the scanning electron microscopy, energy dispersive spectroscopy and transmission electron microscopy.
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Synthesis and electrical property measurements of individual layered transition metal dichalcogenide nanotubes and nanowires
… (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). Information about the shape, identity, and nanostructure was gained utilizing these techniques. Electron beam lithography was used to make electrical contacts to the nanowires. Once …
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Integrated approach to solving reservoir problems and evaluations using sequence stratigraphy, geological structures and diagenesis in Orange Basin, South Africa
… (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and stable carbon and oxygen isotopes geochemistry to determine the diagenetic alteration at deposition and post deposition in the basin. The shale samples were subjected to Rock-Eval pyrolysis and accelerated …
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Avaliação mecânica e microestrutural pós forjamento da liga de níquel 718 com adição de ítrio
… examined by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and tensile tests. Two alloys with nominal yttrium contents of 0.1% and 1% in weight and a reference alloy with no yttrium addition were melted, forged, solubilized and aged. It was …
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The electrical properties of ruthenium-aluminium alloys
… performed for the first time, and together with energy dispersive spectroscopy, has revealed a composition at which there is a resistivity minimum and a positive thermo-e.m.f maximum, which appears to be associated with the formation of the ordered ruthenium aluminide phase. The resistivity and …
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Exploring the possibility of low temperature glazing in faience from the Djoser Step Pyramid through compositional analysis
… scanning electron microscopy, x-ray energy dispersive spectroscopy, x-ray diffraction and microcomputed tomography. It appears that the tile was glazed by the method of "application." There is evidence that may support hypotheses of low temperature glazing, though the phosphorus …
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Genetically engineered phage fibers and coatings for antibacterial applications
… of the free-standing fibers is confirmed via energy-dispersive spectroscopy (EDS) and inductively-coupled plasma atomic emission spectroscopy (ICP-AES), showing -0.61,pg/cm of silver on E3-Ag fibers. This degree of silverization is threefold greater than that attainable for the unmodified …
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Two-Dimensional Titanium Carbide MXene for Lithium-ion Conductive Solid-state Electrolytes
… (XRD), scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS), Fourier-transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), and Kelvin probe force microscopy (KPFM) to evaluate its structural and morphological properties. To explore the potential of 2D …
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Crack Tip Micromaching by Femtosecond Laser for Fracture Testing of Metal Laminates
… examined via scanning electron microscopy and energy dispersive spectroscopy techniques to obtain changes in layer restructuring and modification. The motivation of this study is to characterize the heat affected zone in the materials produced by ultrafast laser processing to determine whether …
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