Search for dissertations about: "atom probe tomography"
Showing result 6 - 10 of 45 swedish dissertations containing the words atom probe tomography.
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6. Optical spectroscopy and fluorescence imaging for cancer diagnostics
Abstract : This work presents optical methods for diagnosing cancer. A complementary method for diagnosing eye cancer was investigated using a technique developed within this work named transscleral optical spectroscopy (TOS). READ MORE
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7. An Atom-Probe Tomography Study of Phase Separation in Fe-Cr Based Steels
Abstract : Stainless steels are very important engineering materials in a variety of applications such as in the food industry and nuclear power plants due to their combination of good mechanical properties and high corrosion resistance. However, ferrite-containing stainless steels are sensitive to the so-called ‘475°C embrittlement’, which is induced by phase separation of the ferrite phase, where it decomposes into Fe-rich ferrite (α) and Cr-rich ferrite (α'). READ MORE
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8. Atom Probe Tomography of Hydrogen and of Grain Boundaries in Corroded Zircaloy-2
Abstract : Due to their low thermal neutron capture cross-section, zirconium alloys are widely used in the nuclear industry for fuel cladding and structural components. The lifetime of the fuel assemblies in the reactors are largely dictated by the ability of the fuel cladding to withstand corrosion and mechanical damage. READ MORE
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9. Atom Probe Tomography of TiSiN Thin Films
Abstract : This thesis concerns the wear resistant coating TiSiN and the development of the analysis technique atom probe tomography (APT) applied to this materials system. The technique delivers compositional information through time-of-flight mass spectrometry, with sub-nanometer precision in 3D for a small volume of the sample. READ MORE
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10. Optimization of High-order Harmonic Generation for Attosecond Science
Abstract : High-order harmonic generation is a highly nonlinear, though inherently inefficient, process which can lead to emission of coherent, broadband extreme ultraviolet radiation in the form of attosecond pulses. Attosecond pulses are crucial for experiments investigating photoionization dynamics on the femto- and attosecond timescales. READ MORE