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 20 of 22 for “"bfo"”.
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Impacts of blood flow occlusion on the human neuromuscular system
Blood flow restricted or occlusion (BFO) exercise uses external pressure to impede blood flow, thus reducing the amount of oxygenated blood reaching the muscle, with greater pressure causing greater obstruction of blood flow. The result is enhanced muscle fatigability. The four studies in this …
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Structure, magnetism and multiferroicity in self-assembled oxide nanocomposites
… vertical nanocomposites such as BiFeO₃-CoFe₂O₄ (BFO-CFO) which consist of magnetic CFO pillars in a matrix of ferroelectric BFO coupled via strain provide an exciting path to create artificial magnetoelectric multiferroics. In this thesis, we explore the magnetic, multiferroic and magnetoelectric …
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Magnetoelectric Coupling in BaTiO3-BiFeO3 Multilayers: Growth Optimization and Characterization
… film multilayers of BaTiO3 (BTO) and BiFeO3 (BFO). Multiferroics possess more than one ferroic order parameter, in this case ferroelectricity and anti-ferromagnetism. Cross-coupling between these otherwise separate order parameters promises great advantages in the fields of multistate memory, …
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The effect of acute low-load resistance exercise with the addition of blood flow occlusion on muscle function in children and adults
… training is used with blood flow occlusion (BFO), to mimic strength increases from high-load training. Due to differing physiological responses to exercise, children may respond differently to BFO than adults. This study compares the effect of low-load exercise with BFO on maximal voluntary …
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Structure-Property Relations on Strain-Mediated Multiferroic Heterostructures
… single phase multiferroic materials like BiFeO3 (BFO) thin films, and strain-mediated magnetoelectric (ME) nanocomposites, have the potential to fulfill a number of functional requirements in actual applications—principally, direct control of magnetization by the application of an electric field …
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Templated Multiferroic Nanocomposites by Ion-Lithography
… coupling. For example, ferroelectric BiFeO3 (BFO) and ferrimagnetic CoFe2O4 (CFO) could grow epitaxially on [001]-SrTiO3 substrate, forming BFO matrix and CFO pillars. In this thesis, we focus on three things: First, the possibility of integrating perovskite on garnet Gd3Ga5O12 (GGG) substrate …
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Optical control and probe of ferromagnetic and ferroic orders in films, heterostructures, and perovskite-based material systems
… film Co/Pd multilayers, (2) BaTiO3-BiFeO3 (BTO-BFO) a magneto-electric materials system, and (3) CuCl4 halide organic-inorganic perovskites. Low-power all-optical memory offers a unique opportunity to achieve ultra-fast magnetic switching in which the switching dynamics are not thermally …
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THE EFFECTS OF POTASSIUM AND SODIUM CATIONS ON THE PHASE AND MORPHOLOGY OF BISMUTH IRON OXIDE CRYSTALS
Bismuth iron oxide (BFO) crystals have potential for applications ranging from next-generation, magnetoelectricity-based electronics to photocatalysts for the breakdown of toxic chemicals. Hydrothermal synthesis (HTS) has been shown to be an attractive solution growth method for producing …
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Probing Coherent States and Nonlinear Properties in Multifunctional Material Systems
… phase, was a main focus of this study. BiFeO3 (BFO) is the most widely investigated multiferroic due to its high Neel and Curie temperatures and has antiferromagnetic and ferroelectric properties [8]. An inherent drawback of BFO is its large leakage currents. In this project, (1 − …
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Magnetoelectric Oxide Nanocomposite Heterostructures
… based on the specific phase architectures in BFO-CFO self-assembled thin films grown on variously oriented STO substrates and the epitaxial film growth knowledge, I designed two kinds of new film heterostructures: (i) I utilized self-assembled BFO nanopillars in a BFO-CFO two phase layer on …
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COMPOSITI IBRIDI INNOVATIVI OTTENUTI ATTRAVERSO LA MODIFICA DI SUPERFICIE DI FERRITI PER APPLICAZIONI BIOMEDICHE E AMBIENTALI
… nanoparticelle di ferrite di bismuto (BiFeO3 o BFO). Per quanto riguarda il Fe3O4, oltre alle sue note proprietà magnetiche, ha un'eccellente biocompatibilità, biodegradabilità e non tossicità per l'uomo. Queste caratteristiche uniche sono essenziali per le applicazioni biomediche, in …
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Vertically and Horizontally Self-assembled Magnetoelectric Heterostructures with Enhanced Properties for Reconfigurable Electronics
… and logic devices. Firstly, a BiFeO3-CoFe2O4 (BFO-CFO) heterostructure was epitaxially deposited on Pb(Mg1/3Nb2/3) O3-x at%PbTiO3 (PMN-xPT). The resulting PMN-xPT was proven to have a large piezoelectric effect capable of boosting the CME in the heterostructure to create a much higher α. …
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Magnetoelectric Effect in Ferroelectric-Ferromagnetic Heterostructures
… we generated self-assembled BiFeO3-CoFe2O4 (BFO-CFO) nanostructures of varying architectural structures on differently-oriented perovskite substrates. We were able to control aspect ratio through both thickness control and by manipulating growth thermodynamics. The relationship between …
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Chemical vapour deposition of complex ferroic oxide thin films
… a unique growth method for multiferroic BiFeO3 (BFO) thin films is shown, where a phase pure BFO thin films can be prepared even in the presence of excess bismuth precursor during the growth process. This type of growth is usually called adsorption controlled growth and can be used for growing …
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Predicting thermodynamic and transport parameters for metal contaminant sorption to hydrated metal oxides in aquatic systems
… its site capacity is much smaller than that of BFO. Macroscopic analyses disclosed two sets of adsorption sites on the goethite surface: a small set of high affinity sites available to transition metal ions and a large set of low affmity sites to which only alkaline earth metals bind. This …
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Multiferroic BiFeO3 films and nanostructures for hybrid energy harvesters
… have been used to obtain thin films of BFO and its derived systems. The main deposition techniques applied to the production of BFO films are chemical solution deposition (CSD), pulsed laser deposition (PLD), sputtering and sol-gel. So far, compared to other methods, Metal-Organic …
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Lead - Free Piezoelectric Based Magnetoelectric Composites
… of (1 - x) BaTiO3 - x BiFeO3 materials (BT - x BFO, x = 0.025 - 1.0) was investigated for designing compositions suitable for thin film devices. The BT - x BFO compositions in narrow range of x = 0.71 - 0.8 were found to exhibit good piezoelectric, dielectric and magnetic properties …
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ACLRO: An Ontology for the Best Practice in ACLR Rehabilitation
… that adheres to the Basic Formal Ontology (BFO)’s framework. In this step, the EBP, PBE, and statistic ontologies are developed independently. Next, the study integrates these individual ontologies into the final ACLR Ontology (ACLRO) as a more meaningful model that endorses the reusability …
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A modified technique in RFID networking planning and optimization
… Algorithm (GA), Bacteria Foraging Optimization (BFO) and Particle Swarm Optimization (PSO) Algorithm. In this research, PSO algorithm was used in the optimization process as it was considered as a very useful, efficient and well known algorithm. However, there are no parameters settings of PSO …
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Modulations of Electroencephalography signals in Response to experimental pain During Single Leg Cycling exercise
… electrical stimulation and blood flow occlusion (BFO) was used to induce pain the non-exercising leg (Pain). During all experimental conditions, pain and effort variables were recorded. Results: The experimental pain intervention induced a significant amount of pain (7.63±1.72 on the pain scale) …
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