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 6 of 6 for “"X-ray Photon Correlation Spectroscopy"”.
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X-ray photon correlation spectroscopy studies of the dynamics of self-assembling block copolymer structures
… presented to the emerging technique of X-ray Photon Correlation Spectroscopy. These improvements enabled the study of polymer structures, in particular isotropic sponge phases of homo-polymer block copolymer mixtures. An analysis is presented on how to optimize the experimental beamline …
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X-ray induced temperature dependent amorphous-amorphous transitions in the GeO2 glass
… thesis investigates the effects of intense X-ray irradiation on vitreous germanium dioxide (v-GeO2), a prototypical strong oxide glass, by combining X-ray photon correlation spectroscopy (XPCS), X-ray diffraction (XRD), and inelastic X-ray scattering (IXS). The results demonstrate that intense …
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Dynamical perspective of stability in glasses
… with thermo-mechanical treatments including X-ray irradiation and high-pressure compression. Vibrational dynamics are characterized through the vibrational density of states measured by Nuclear Resonant Analysis of Inelastic X-ray Scattering and Raman spectroscopy, while slow relaxation …
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The yielding transition in soft materials
… experiments were performed with simultaneous X-ray scattering. By utilizing X-ray photon correlation spectroscopy (XPCS) to analyze the scattering results in a time-resolved manner, the rheological deformations can be connected to the instantaneous dynamics of the material. Through these …
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The effect of intense x-ray beams on oxide glasses unveiled by means of photon correlation spectroscopy
… we aim to study the structural evolution under x-ray illumination in a selection of oxide glass formers as a function of the radiation dose. The irradiated specimens are investigated by means of XPCS experiments and also by means of “exsitu” experiments as luminescence, Raman and x-ray diffraction …
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Microplasticity in metallic glasses
… and therefore shear banding. We use a coherent x-ray scattering technique (x-ray photon correlation spectroscopy or XPCS) to probe the lower stress range, whereas an in-situ acoustic emission (AE) technique is used to track structural activity close to yielding. As a first experiment, XPCS has …