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 29 for “"BTO"”.
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Barium Titanate-Based Magnetoelectric Nanocomposites
Barium Titanate (BaTiO3 or BTO) has attracted an ever increasing research interest because of its wide range of potential applications. Nano-sized or nanostructured BTO has found applications in new, useful smart devices, such as sensors and piezoelectric devices. Not only limited to one material, …
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Iron Modified Bismuth Titanate Pyrochlore Photocatalysts for Environmental Remediation and Solar Fuel Production
… of a pyrochlore phase bismuth titanate (Bi2Ti2O7-BTO) in driving the photo-assisted decomposition of a model pollutant, methyl orange (MO). The photoactivity of the BTO was probed with the inclusion of Fe with BTO and with the addition of a co-catalyst- Pt external to the Fe-BTO. The addition of …
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Nanostructured BaTiO3 Thin Films for Enhanced Photoresponse
… engineering strategies using BaTiO3 (BTO) as a representative perovskite ferroelectric. The main achievements and outcomes are highlighted below. A record high photovoltage was achieved in a thin BTO film. Highly preferred-oriented BTO films were successfully grown on silicon …
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Timing Fate: Build To Order Romances in Singapore
… to be Singaporean through the Build To Order (BTO)? What are the devices people use to manage the uncertainties of the ballot or to stretch their lives across temporal sutures? In brief, in Singapore, 80% of the population lives in Public Housing Flats. The easiest and most affordable path to a …
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Production ramp-up of a hardware startup : simulating CONWIP and CONWIP-build to order production strategies
… base production strategies -- CONWIP and CONWIP-BtO hybrid. This thesis details the modeling mechanisms used to develop the simulation models. Performance trade-offs that exist for these two production strategies with respect to lead time and production floor inventory levels are analyzed. …
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Quantitative mRNA detection with advanced nonlinear microscopy
… the SHG emission behavior of individual BTO nanocrystals via time-resolved single molecule spectroscopy, correlation spectroscopy, and confocal microscopy. High-intensity stable emission is collected from individual BTO nanocrystals with a high signal-to-noise ratio; the polar-dependent …
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Magnetoelectric Coupling in BaTiO3-BiFeO3 Multilayers: Growth Optimization and Characterization
… in multiferroic thin 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 …
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Pulse Sharpening Effects of Thin Film Ferroelectric Transmission Lines
… on a conductive substrate. Barium titanate (BTO), which has been gaining popularity due to its high dielectric constant, strong nonlinearity, and lack of lead, was grown. Molecular beam epitaxy and sol-gel growth were both explored and sol-gel was chosen as the growth method for the final …
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The Effects of Strain and Vacancies on the Electric and Vibrational Properties of Ferroelectric BaTiO3 from First-principles
… of polarization in rhombohedral (R3m) BaTiO3 (BTO) that do not conform with intuition, or the current state of known behavior of epitaxially strained BTO. These studies reveal a polarization that increases with tensile strain, instead of compressive strain, and a polarization that is …
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Kraftmikroskopische Untersuchungen dünner ferroelektrischer Filme
… : PZT), and barium titanate (BaTiO3 : BTO) by means of scanning force microscopy - specifically Piezoresponse and Kelvin-Probe. The film thickness of the investigated samples ranged between 50nm and 800nm. This experimental work focussed on the following issues: native domain …
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ASSESSMENT OF ANTIBACTERIAL EFFECT AND FLOWABILITY OF BIOCERAMIC SEALER MODIFIED WITH BaTiO3 NANOPARTICLES
… was no significant difference between the BC+BTO 5% and BC+BTO 10% groups (BC: 3.90 ± 0.27, while both the BC+BTO 5%: 3.31 ± 0.12, BC+BTO 10%: 3.01 ± 0.22). Conclusion: An antibacterial piezoelectric endodontic sealer was developed. Adding more than 5%w of BaTiO3 particles into BC sealers …
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Self-Assembled Barium Titanate Nanoscale Films by Molecular Beam Epitaxy
… growth condition was confirmed to lead to bulk BTO values for out-of-plane lattice constant, Ti/Ba ratio, and piezoelectric coefficient for 40 nm thick BTO thin films. Angle-resolved x-ray photoelectron spectroscopy studies show that excess barium accumulates at the surface in the form of a …
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Production ramp-up of a hardware startup : simulating build to order strategies, capacity estimations and impacts of batching
… Both a Push system and a Build to Order (BtO) system are initially considered. The trade-offs that exist in these policies are identified and analyzed. A recommendation is made to adopt a BtO policy and to build in a batch size of one. Based on the feedback from NVBOTS an advanced model is …
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Optimizing shipping pricing on Dell.com on build to order notebooks to US consumers across customer experience, profitability and working capital
Current shipping pricing for BTO notebooks on Dell.com is uniform across products and provides customers with three levels of service Express, Expedited, and Standard. In October 2016, Dell launched a program to give customers more information and better choices when they select their shipping …
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Präparation und Charakterisierung ferroelektrischer perowskitischer Multilagen.
… and dielectric properties of Bariumtitanate (BTO) / Strontiumtitanate (STO) superlattices. The investigations were carried during the research for a doctoral thesis on the IFW Dresden, Institute for Metallic Materials (under supervision of Prof. Schulz). These multilayers have been prepared on …
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Optical control and probe of ferromagnetic and ferroic orders in films, heterostructures, and perovskite-based material systems
… thin 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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Theoretical study of polar complex oxide heterostructures
… a prototypical ferroelectric, BaTiO<sub>3</sub> (BTO). Surface redox processes such as oxygen vacancies, induced by the electric field within the film, can donate electrons to the buried interface, screening the polarisation charges. This process is found to be favourable for both systems, and is …
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Probing Coherent States and Nonlinear Properties in Multifunctional Material Systems
… project, (1 − x)BaTiO3-(x)BiFeO3, x = 0.725 (BTO-BFO) heterostructures were investigated [9], where the conductivity of the solid solution can be reduced by adding another perovskite material, BaTiO3 [2]. We aimed to study optically induced coherent states in our BTO-BFO structures. Time …
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Performance of Concurrency Control Methods in Distributed Database Management Systems (Timestamp Ordering, Two-Phase Locking, Optimistic Scheme, Restart, Transaction Blocking)
… mechanisms, namely Basic Timestamp Ordering (BTO), Basic Optimistic scheme (BOPT), Basic Two-Phase Locking (B2PL), and Conservative Timestamp Ordering (CoTO), were developed, and the performances of those CCMs in distributed database management system (DDBMS) were simulated with some care to …
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Modeling end-to-end order cycle-time variability to improve on-time delivery commitments and drive future state metrics
… future state. Three high volume Build to Order (BTO) regional product lines were chosen as cases to analyze. BTO product lines, compared to Build-to-Stock (BTS), inherently have a more variable supply chain for the processes examined. To meet the main objectives, this thesis examines the …
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