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 12 of 12 for “"x-ray fluorescence microscopy"”.
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Characterization of Cu-rich aggregates in neurogenic niches of the rodent brain by X-ray fluorescence microscopy
… has historically been challenging. X-ray fluorescence microscopy (XRF) offers excellent spatial resolution (down to 30~nm) and detection limits (sub parts per million), making it an excellent tool for analyzing metal distributions in the brain. Using XRF, it is demonstrated that …
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Correlative elemental and electrical micro-analysis of laser fired contacts in silicon solar cells
… and elemental mapping tools like micro-X-ray fluorescence microscopy and energy dispersive spectroscopy. For the conditions studied, it is unclear whether double-shot lasing can produce higher-quality LFCs than single-shot lasing, although results suggest that the infrared laser influences …
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Gold nanoparticle cellular uptake and its implications for cancer therapy
… of AuNP uptake by performing multiphoton fluorescence-lifetime imaging microscopy (MP-FLIM) on live cells. Using this technique and subsequent analysis methods multiple datasets were obtained showing the association of AuNPs with the cell membrane in real-time. This study then goes on to …
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Detecting and gettering chromium impurities in photovoltaic crystalline silicon
… In this thesis, I employ synchrotron-based X-ray fluorescence microscopy to study chromium (Cr) distributions in multicrystalline silicon in as-grown material and after two phosphorous diffusion profiles. I complement quantified precipitate size and spatial distribution with interstitial Cr …
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The role of copper in Parkinson's disease
… for copper in this region. Synchrotron-based X-ray fluorescence microscopy, immunofluorescence, and western blot demonstrated that levels of copper, and copper transporter protein 1, are significantly reduced in the vulnerable substantia nigra and locus coeruleus in Parkinson s disease. The …
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Understanding Electrode-Electrolyte Interfaces with Metal Dissolution and Redeposition Chemistry
… with advanced spatially resolved synchrotron X-ray fluorescence microscopy and micro-X-ray absorption spectroscopy, we then successfully demonstrate the formation and chemical identification of the diffusion layer. By studying the evolution of diffusion layers(tens of micrometers thick) when …
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Plasmonic Nanoplatforms and Surface-enhanced Raman Spectroscopy for in vivo Sensing: from Plants to Animals
… a multi-modal approach consisting of confocal microscopy, transmission electron microscopy, and x-ray fluorescence microscopy. Dye coated AuNR@Ag served as a strong contrast agent for two-photon imaging, photoacoustic imaging, and Raman mapping during in vivo experiments in Tobacco leaves. The …
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Understanding Hearing Loss in Osteogenesis Imperfecta
… microtomography, second harmonic generation microscopy, Raman spectroscopy, nanoindentation, X-ray fluorescence microscopy, and auditory brainstem response tests.</p> <p>Our findings show that while <em>oim/oim</em> ossicles show no alterations in tissue mechanics, composition and collagen …
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In-vivo-Testung eines neuartigen bFGF/TCP-Composite
… After 1 or 3 weeks the slides were examined by fluorescence microscopy of an intravitale fluorescence staining to show the dynamic of bone ingrowth, histology, histomorphometry, electron microscopy, microradiography and biomechanically with a three point bending test. In the second part of the …
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Cellular metal ion sensing using DNAzymes
… bound and mobile forms. Techniques based on X-ray absorption, such as X-ray fluorescence microscopy (XFM) can simultaneously detect multiple metal ions and can distinguish between different oxidation states. However, these techniques require the use of highly focused X-ray beams limiting more …
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Investigating Cathode–Electrolyte Interfacial Degradation Mechanism to Enhance the Performance of Rechargeable Aqueous Batteries
… behavior. Relying on the spatially resolved X-ray fluorescence microscopy, we discover a voltage-dependent Mn dissolution/redeposition (D/R) process during electrochemical cycling, which is confirmed to be related to the Jahn–Teller distortion and surface reconstruction at different voltages. …
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Defect engineering strategies for solar grade silicon and their optimization by predictive simulation
… Fe in these wafers is measured by means of X-ray fluorescence microscopy and is used as input parameter for the simulations together with total and interstitial Fe concentrations pub lished for this material. As-grown and post-processed electron lifetimes and solar cell efficiencies are …