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 11 of 11 for “"X-ray Reflectometry"”.
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Investigating Complex Organic Species on Mineral Surfaces
… investigated via depletion isotherms, neutron reflectometry, sum-frequency generation and X-ray reflectometry. Stearic acid is shown to adsorb from toluene and can be removed and reapplied. However, in the presence of excess water, stearic acid can be removed from the surface to form calcium …
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Phase change optical recording - preparation and X-ray characterization of GeSbTe and AgInSbTe films
… of the structural changes. Corroborative x-ray diffraction measurements reveal that upon annealing the amorphous Ge2Sb2Te5 films crystallize to a cubic structure followed by an hexagonal structure upon further annealing. Both Ge4Sb1Te5 and Ag5.5In6.5Sb59Te29 films crystallize in only one …
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Untersuchung gasochrom schaltender Wolframoxide
… thermodynamics. To characterize the coatings, X-ray reflectometry (XRR), optical spectroscopy and in-situ time resolved spectroscopy were mainly used. The determination of relevant physical properties like density, thickness and roughness or the dielectric function (DF) (<--> index of refraction …
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Influence of deposition parameters on morphology, growth and structure of crystalline and amorphous organic thin films : (the case of perylene and alpha-NPD)
… studied by atomic force microscopy (AFM) and X-ray diffractometry (XRD). Subsequently, for the study of the temperature dependence of perylene thin film growth on gold substrates, molecular vibrations in the perylene films are studied and related to structural properties, including surface …
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Correlative ex-situ analysis and operando ellipsometric investigation during oxygen evolution reaction of mesoporous iridium oxide model catalysts
… such as scanning electron microscopy (SEM), X-ray reflectometry (XRR), conductivity measurements, and UV-VIS-NIR absorption spectroscopy. SE data also offer the possibility to derive valence electron energy loss spectra (VEELS), which provide further information about the electronic structure …
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Combinatorial material synthesis applied to Ge-Sb-Te based phase change materials
… of the structural changes. Corroborative x-ray diffraction measurements reveal that upon annealing the amorphous GeTe, Ge2Sb2Te5 and GeSb2Te4 films crystallise to a cubic structure, followed by a hexagonal structure upon further annealing. Ge4SbTe5, Sb2Te, and Sb2Te3 films crystallize in …
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Structural Characterization of the Interfacial Structure of the Working Electrode in Dye-sensitized Solar Cells Using X-ray and Neutron Techniques
… of the working electrode in DSSCs using X-ray and neutron techniques. Chapters 1 and 2 provide an introduction to X-ray reflectometry (XRR) and neutron reflectometry (NR) techniques, i.e., the principal analytic tools used for research carried out in the context of this thesis. Chapters 3, …
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Sn-Sb-Se based binary and ternary alloys for phase change memory applications
… investigated by van der Pauw measurements, x-ray diffraction, x-ray reflectometry. By varying the heating rate, the Kissinger analysis has been used to determine the combined activation barrier for crystallization. To screen the kinetics of crystallization, a static laser tester was employed. …
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Adsorption of organic friction modifiers at static and sheared interfaces
… referred to as the tribometer, for neutron reflectometry (NR) and X-ray reflectometry (XRR). The tribometer can apply shear to an interface at rates of up to 3.8 x 103 s-1 and the thicknesses of thin films adsorbed at the interface can be determined via NR or XRR. The details of the …
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Predicting the structure and performance of dye-sensitized solar cells by computational methods.
… despite its importance for DSC fabrication. X-ray reflectometry (XRR) had been used by a collaborator to investigate monolayer thicknesses and densities as they grow under different conditions in the DSC fabrication process. This author trained a neural network to perform rapid, deterministic …
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Atomic mechanisms of stress formation of group IVB-VIB transition metal nitrides deposited by DC magnetron sputtering
… to establish this understanding, we performed x-ray diffraction, transmission electron microscopy measurements (TEM), XRD-pole figure measurements, x-ray reflectometry, XRD-sin2Psi method, ex-situ and in-situ stress measurements, ex-situ spectroscopic ellipsometry, Rutherford backscattering …