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 “"Anisotropic growth"”.
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Substrate Dependence on the Growth and Texture of Lead Titanate and Lead Zirconate Titanate Thin Films by Metal Organic Chemical Vapor Deposition
Substrates employed for PT and PZT film growth in this study can be categorized as the single crystalline substrates, polycrystalline substrates, and the amorphous substrates. The PT films grown on the single crystal oxide substrates (MgO(100) and LaAlO$\sb3$(100)) are single crystalline and …
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Electron beam characterization of carbon nanostructures
… than equant, and thus likely the result of some anisotropic growth process. This assertion is separately supported by intensity profiles of linear features in HRTEM images. The density of the cores is further shown to be less than 90% of the density of graphitic rims surrounding these cores. This …
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The role of the transcription factor JAGGED in early floral organogenesis
… cells requires coordinated cytoplasmic growth, oriented cell wall extension, and cell cycle progression. It is debated which of these processes are primary drivers for organ morphogenesis and directly targeted by developmental regulators. The single zinc finger transcription factor …
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Effects of metal ion–ligand interactions on the synthesis of metal nanostructures with controlled morphology
… metal–ligand intermediates, which controlled the anisotropic growth and formation kinetics of metal nanocrystals. These results provide molecular level understanding of the formation mechanism of metal nanocrystals, indicating that design of molecular precursors is an important factor in …
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Ordering of Curving Interfaces
… can sense curvature and localize patterns, and anisotropic growth can form branching structures over many scales. The systems I study include fluid membranes and growing solids. My framework connects the study of liquid crystals to cytoskeletons of living cells, and provides tools for …
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Plasma processes in pulsar environments
… dusty plasmas. Conventional modelling of dust growth in this environment is based upon coagulation and nucleation of gas phase material. The second aim of this thesis is to study a possible spheroidal dust growth mechanism via plasma deposition. Dust grains immersed in a plasma acquire a net …
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Shape-Engineering Substrate-Based Plasmonic Nanomaterials
… discovered that (i) slow kinetics leads to an anisotropic growth mode (heterodimeric structures), (ii) fast kinetics causes a very uniform deposition (Au-Ag coreshell morphology, or Au@Ag) and (iii) medium kinetics produces structures with an intermediate morphology (truncated octahedron). In …
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Heavy-metal-free colloidal nanocrystal heterostructures – synthetic chemistry and growth mechanisms
… understanding of the synthetic chemistry and the growth mechanisms for heavy-metal-free nanocrystal heterostructures is critical before their commercialization potential becomes reality. Here, we have developed novel synthetic strategies to achieve the anisotropic growth of colloidal nanocrystals …
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Growth and characterisation of group-III nitride-based nanowires for devices
… get more insight into the mechanisms driving the growth of nitride nanowires by plasma-assisted molecular beam epitaxy (PA-MBE). The influence of the group-III and group-V flux as well as the substrate temperature Tsub has been studied leading to the conclusion that the III-V ratio determines the …
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Growth of undoped and doped IIInitride nanowires and their characterization
… (PAMBE). It has been found that the change of growth parameters (e.g. III-V ratio, growth temperature etc.) greatly influences the morphology of NWs. Nitrogen-rich condition is necessary to have columnar growth for both GaN and InN NWs as the surface diffusivity is reduced and the anisotropic …
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Mathematical modelling of brain tumour growth. Integrating mechanics, phenotypic evolution, and nutrient transport to describe anisotropic behaviour and personalised therapies.
L'abstract è presente nell'allegato / the abstract is in the attachment