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 “"Nanolaminates"”.
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Microstructural evolution and phase stability of Cu/Nb nanolaminates subjected to severe plastic deformation by high pressure torsion
… imposed via severe shear deformation to Cu-Nb nanolaminates fabricated by accumulative roll bonding. Severe plastic deformation was applied in a controlled way using high pressure torsion, reaching very large strains, allowing to investigate microstructural evolutions and phase stability as a …
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Going Deeper into Laser Damage: Experiments and Methods for Characterizing Materials in High Power Laser Systems
… grown films were compared to hafnia-alumina nanolaminates. While the nanolaminates are known to perform better for 1 ns pulses, we found they had worse laser damage performance in the CW regime. We found the nanolaminates reduced crystallinity. The polycrystalline uniform films are thought to …
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Reactive solids under shock compression
… investigated shock reactivity in Zr∙CuO reactive nanolaminates. These experiments observed an impact velocity dependent threshold behavior for chemistry to occur and impact-to-reaction time delays that correspond with oxygen diffusion through the material. Using the laser-driven flyer-plates, a …
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Development and Calibration of Reaction Models for Multilayered Nanocomposites
<p>This dissertation focuses on the development and calibration of reaction models for multilayered nanocomposites. The nanocomposites comprise sputter deposited alternating layers of distinct metallic elements. Specifically, we focus on the equimolar Ni-Al and Zr-Al multilayered systems. …
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Dielettrici high-κ Al-based per 4H-SiC tramite Atomic Layer Deposition
Il carburo di silicio 4H (4H-SiC) è un semiconduttore ad ampio band gap che attira sempre maggiore attenzione per applicazioni in dispositivi elettronici ad elevata potenza o operanti ad alte temperature. In particolare, i metal-oxide-semiconductor field-effect transistors ottenuti su 4H-SiC …