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 “"Ion beam irradiation"”.
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Modification of Iron pnictide and MgB2 thin films using focused He+ ion beam irradiation for superconducting devices
… devices and an understanding of how the focused ion beam evolves in a complex material are the primary motivations behind this work. The materials of interest are MgB2 and Co-doped Ba122. Superconducting properties of MgB2 were discovered in 2001. It is the first superconductor recognized as a …
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Surface modification of traditional and bioresorbable metallic implant materials for improved biocompatibility
… are commonly used in medical implants. Traditionally, corrosion-resistant metals have been preferred. These permanent materials can cause negative systemic and local tissue effects in the long-term. Permanent stenting can lead to late-stent thrombosis and in-stent restenosis. Metallic pins and …
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Ion Beam Synthesis and Irradiation for Si-Based Photonic Materials and Nuclear Waste Management
This thesis describes investigations of material synthesis and interactions of radiation with materials using ion beam techniques, with applications in Si photonics and in nuclear waste management. Advances in electronics and telecommunications drive the need for Si-based optical materials (group …
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Nanoscale investigation of silk proteins using near-field optics
… biopolymers, specifically silk protein, as functional materials. The exceptional mechanical properties and the bio-compatibility of silk has enabled wide range of applications from biomedical devices, optics, electronics, to transient implants. Understanding the mechanisms that underpin the …
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Pentacene Based Organic Electronic Devices
… of the insulator thickness and channel dimensions on the performance of the devices has been investigated. Leakage currents, which are present in many devices using polymeric gate dielectrics, were reduced by patterning the pentacene active layer. The resulting transistors exhibited minimal …
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Engineered Nanomaterials for Targeted Imaging and Therapy
… and they can provide fundamental information on the pathological process. Nanoparticle probes have demonstrated to have numerous advantages over single molecule-based contrast agents, such as tumor-targeted delivery via the enhanced permeability and retention (EPR) effect, prolonged …
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A systematic study of ion-induced nanopatterning on photonic crystal-based label-free optical biosensor
… dielectric material with diffraction gratings engineered on the surface that can control light propagation through its depth. PC enables resonance of a certain wavelength of light, leading to a significant increase in the intensity of light reflected off the surface, and hence the …
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"“Phonon"" and electron transport in glass-crystal dual materials"
… engineering, ranging from energy and transportation, to electronics and communications, and to biomedicine and environment. Disorder engineering has focused primarily on tuning its spatial configuration and distribution to establish desirable structure-property relations. However, while band …
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Engineering Functional Defects in Oxides Using External Stimuli
… of materials often depend strongly on the functional defects of various dimensionalities, such as vacancies, interfaces, and precipitates. Therefore, defect engineering lies at the heart of materials innovations for the next-generation technologies. However, due to the enormous span in the …
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Self-organized nanostructures for the design of bioinspired anti-biofouling interfaces
… (GMT). No. of bitstreams: 2 ARIASSUAREZ-DISSERTATION-2019.pdf: 22996601 bytes, checksum: 2ebc7d4bf1102f97b9ad2b16aa92c9f1 (MD5) LICENSE.txt: 4216 bytes, checksum: 0b9585f6e5d9d019b0110afd21957965 (MD5) Previous issue date: 2019-12-06
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Fission gas transport and its interactions with irradiation-induced defects in lanthanum doped ceria
… have been extremely productive in understanding irradiation-induced displacement damage in metal and metal alloy systems. In order to help understand the fundamental mechanisms of irradiation-induced defect formation and evolution in nuclear fuel, similar combined modeling and experimental …
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Radiation-induced microstructural and mechanical property modifications in advanced alloys
As part of the solutions towards resolving the challenges in energy shortage and climate changes, advanced nuclear reactor systems are being developed as reliable and sustainable clean energy sources with enhanced energy efficiency and safety features. These improved attributes necessitate advanced …