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.
Results
Showing 1 to 20 of 34 for “"Triple junction"”.
-
The evolution of the Indian Ocean triple junction and the finite rotation problem
… that studies of the stability and evolution of triple junctions and of the finite rotations of systems of three plates can yield significantly more accurate tectonic histories than can studies of the relative motions between two plates alone. Topographic and magnetic investigation of the …
-
Modeling of operating temperature performance of triple junction solar cells using Silvaco's ATLAS
… the performance of a typical InGaP/GaAs/Ge multi-junction solar cell at various temperatures. Additional optimization is performed on the base thickness layers to represent that enhancement for the proper operating environment can be achieved. Results are shown for a multi-junction cell operating …
-
The evolution of the Indian Ocean triple junction and the finite rotation problem
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1979.
-
The geochemistry of coexisting glass, phenocrysts, and glass inclusions in basalts dredged from the West Indian Ocean Triple Junction
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1979.
-
Quantification of Elastic Incompatibilities at Triple Junctions via Physics-Based Surrogate Models
… metrics of incompatibility from various triple junction configurationsusingasurrogatemodel. High-fidelityfiniteelementsimulationsofacubic-crystal triple junction under hydrostatic extension were used to generate a synthetic dataset for training the surrogate model. A set of 𝐽 integrals …
-
Visualizing and Understanding Tectonism and Volcanism on Earth and Other Terrestrial Bodies
… chains, deep ocean basins, and plate boundary triple junctions. Better understanding of these processes by visualization and numerical modeling is one of the primary goals of this study.</p> <p>In the geospatial analysis lab at ODU, our research methodology starts with the creation of …
-
Towards High-Performance Multi-Junction Perovskite Solar Cells: Fabrication, Interlayer Design, and Characterisation
… are particularly attractive for multi-junction photovoltaics because their bandgaps can be finely tuned. By stacking materials with different bandgaps, it becomes possible to capture a broader range of the solar spectrum. This has led to the development of perovskite-on-silicon tandems, …
-
Molecular Dynamics Investigation on the Fracture Behavior of Nanocrystalline Fe
… as grain boundary accommodation, grain boundary triple junction, grain nucleation and grain rotation are observed to dictate the plastic deformation energy release. Intergranular fracture is shown to proceed by the coalescence of nanovoids formed at the grain boundaries ahead of the crack. The …
-
Determination of special boundary coordination at quadruple nodes using EBSD
… boundary networks and are quantified by the triple junction distribution (TJD), which has been found to be non-random. The study of connectivity has been extended to three dimensions and simulations have previously been done to obtain a quadruple node distribution (QND) which was also …
-
Revisiting physics of quantum bits
… and it is shown that in some systems, such as in triple-junction superconducting flux qubit, environmental noises that are usually recognized to only have dissipative effects and the trivial resultant dephasing, can also cause pure dephasing. Furthermore, it is demonstrated that, in the current …
-
Polycrystalline Grain Boundary Solute Segregation at Finite Sizes and Temperatures
… grain size dependences (when grain boundary and triple junction volume fractions become finite) and solute segregation at finite temperatures where vibrational entropy becomes non-negligible. The thesis first demonstrates extractions of triple junction segregation spectra which show …
-
High-resolution temporal records of magmatism, sedimentation, and faulting at evolving plate boundaries
… crust (Siletzia terrane) and passage of a triple-junction. Chapter 2 establishes the volcanic stratigraphy of northern Siletzia and show that it is consistent with its origin as an accreted oceanic plateau, possibly developed above a long-lived Yellowstone hot spot. Chapter 3 quantifies …
-
Energetics and Deformation Response of Random Grain Boundaries in FCC Nickel
… occur in random high-angle boundaries close to a triple junction where the cracks have high angles with respect to the tensile loading direction. The cracking results from the simulations agree well with current preliminary results of experimentally deformed austenitic steel samples. Furthermore, …
-
A technique for implementing complex boundary configurations in industrial plasma modelling and simulation
… special interest in what is commonly known as a triple junction configuration. And the impact of the used plasma model on the results. We conclude with a discussion of the results, and future planned work.
-
Spectroscopic studies of field-induced electron emission from isolated microstructures
… to reveal that emission may occur from the edge triple junction or from the bulk of the carbon particle. An existing UHV electron spectrometer has been extensively rebuilt to incorporate a computer control and data acquisition system, improved sample handling and manipulation and a specimen …
-
Computational framework for simulating the deformation and fracture response of oligocrystalline shape memory alloys
… tension loading condition for oSMA wires with triple junction structures. A quantitative analysis of the simulation results is conducted at the microstructural level in each transformation system to interpret the initiation of transformation-induced fracture. The simulations provide insights on …
-
Grain boundary network design
… of grain boundary network structure called the triple junction distribution function (TJDF), which encodes both crystallographic and topological information. I establish new results regarding the physical symmetries of triple junctions and find a relationship between crystallographic texture and …
-
Enhancing Stability in Quantum-Dot and Perovskite Optoelectronic Devices through Compositional Engineering and Surface Treatment
… perovskite solar cells, a sublayer relevant to triple-junction solar cells. I find that a bifunctional molecule, positioned at a buried interface, simultaneously passivates traps and improves energy alignment, reclaiming ~30 mV of open-circuit voltage and providing a pathway to more efficient …
-
Seismic structure of the mantle beneath the Pacific Hemisphere
… west Pacific. This region, containing the Boso Triple Junction, is one of the most complex subduction zones on the planet. Finally we continue west beneath the Sea of Japan, the Sea of Okhotsk, and the northeast Chinese craton. The changes in mantle structure across the Pacific reveal many …
Page 1 of 2