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 11 of 11 for “"nanovoids"”.
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Enhancing solar cells with plasmonic nanovoids
This thesis explores the use of plasmonic nanovoids for enhancing the efficiency of thin-film solar cells. Devices are fabricated inside plasmonically resonant nanostructures, demonstrating a new class of plasmonic photovoltaics. Novel cell geometries are developed for both organic and amorphous …
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Integration of CdSe/ZnS Quantum Dots into As-induced Etched Nanovoids on GaSb
… presented, to describe their incorporation into nanovoids formed on GaSb membranes. Nanoscale etch-pit formation on GaSb surfaces happens as a result of arsenic (As2) based in situ etch technique. The effect of in situ etch technique leading to the formation of the nanovoids was studied. Atomic …
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Quantitative Characterization of Nanovoids in Quenched Aluminum Using Small Angle X-ray Scattering Studies
… X-ray scattering (SAXS) study of quenched-in nanovoids in 99.988 and 99.995 at.% aluminum (Al) is presented. Nanovoids are agglomerations of point defects (vacancies) in the metallic host. SAXS is a non-destructive, dynamic probe which is ideally suited to characterize nanoscale electron …
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Nanostructure formation on Germanium by ion irradiation
… the formation of a regular network of columnar nanovoids induced by heavy ion and high fluence irradiation at room temperature. This phenomenon can represent a possible way to produce wide nanostructured areas on semiconductor surfaces by a well-established semiconductor technology process such …
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Molecular Dynamics Investigation on the Fracture Behavior of Nanocrystalline Fe
… is shown to proceed by the coalescence of nanovoids formed at the grain boundaries ahead of the crack. The simulations also show that at an atomistic scale the fracture resistance and plastic deformation energy release mechanisms increase with increasing temperature. Finally a softening of …
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ON DEFORMATION STABILITY AND DUCTILE DAMAGE IN NANOTWINNED METALS
… materials due to the growth and coalescence of nanovoids over a range of biaxial stress states and strength anisotropies. This work addresses the following two broad questions: (i) What are the rates of TB migration as a function of microstructural length scales, loading orientation and key …
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Nanoporous Gold: Mechanics of Fabrication and Actuation
… often develop cracks in fabrication. Similarly, nanovoids in thin film precursor alloys or low Au content in the precursor alloys may lead to fractures in the NPG thin films, which compromise integrity and functionality of the resulting architecture. Recently developed scalable electrochemical …
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Generation and imaging of structural laser beams for optical trapping of airborne particles and light-matter interaction applications.
… us to produce high aspect-ratio elongated nanovoids inside a pristine sapphire crystal when high-intensity femtosecond laser pulses. Careful consideration of the numerically predicted intensity distribution of the beam inside the crystal and the resulting length and diameter of the …
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Generation and imaging of structural laser beams for optical trapping of airborne particles and light-matter interaction applications.
… us to produce high aspect-ratio elongated nanovoids inside a pristine sapphire crystal when high-intensity femtosecond laser pulses. Careful consideration of the numerically predicted intensity distribution of the beam inside the crystal and the resulting length and diameter of the …
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Processing and irradiation-driven evolution of refractory microstructures
… Additional defect sinks in the form of pores or nanovoids have also been shown in the literature to increase the irradiation resistance of the material by reducing the rate of defect accumulation and preferentially annihilating interstitial defects at room temperature. However, like …
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Morphogenesis–morphology–function relationships of irregular nanomaterials using advanced electron microscopy and graph theory
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01