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 26 for “"Fabrication costs"”.
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Reduction of Electronic Traps in Organic Semiconductors by Novel Processing Methods
… organic-based substitutes while reducing fabrication costs.
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Evaluation of Novel and Low-Cost Materials for Bipolar Plates in PEM Fuel Cells
Bipolar plate material and fabrication costs make up a significant fraction of the total cost in a polymer electrolyte membrane fuel cell stack. In an attempt to reduce these costs, a novel manufacturing method was developed for use with composite materials. Conductive fillers were mixed with a …
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Processing and characterization of boron nitride composites and films
… their further application is limited by high fabrication costs, susceptibility to oxidation, and high electrical conductivity. Boron nitride (BN) provides a suitable alternative to carbon because of its oxidation resistance and its low dielectric constant. This thesis describes a novel …
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Techno-economic Analysis of Deuterium-Tritium Magnetic Confinement Fusion Power Plants
… study critically assesses the overnight capital costs of a FPP that hosts ARAI, a 350 MWe tokamak reactor based on the MIT ARC fusion concept. This research evaluates the economic viability of constructing an Nth-of-a-kind ARAI-FPP. The overnight capital costs for ARAI-FPP are estimated to range …
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n-type silicon-germanium based terahertz quantum cascade lasers
… The mature Si processing technology may reduce fabrication costs and ultimately allow integration of THz QCLs with mainstream semiconductor electronics. This work investigates the suitability of a range of Si-based material configurations for THz QCL design. An effective mass/envelope function …
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Design, Fabrication, and Data-Driven Locomotion Control of Modular Reconfigurable Soft Robots
… the implementation of mobile robots include high costs and an inability to reach the level of adaptabilityand efficiency seen in animals. Newer subfields like soft robotics and modular reconfigurablerobots hold exciting potential to address both challenges. When combined, the qualities ofmodular …
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Integrated Heteroepitaxial Photodetectors
… but the development of Ge-on-Si epitaxy reduced fabrication costs and opened doors for usage in applications including optical communications and infrared imaging. To reap the benefits of monolithic integration and incorporation in the back-end-of-line (BEOL) stack, low processing temperatures (< …
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Alternative Methods for Sealing Overlapping Steel Members with Narrow Gaps During Galvanizing
… are not necessary used for strength, and add fabrication costs because of the additional weld. The purpose of this research is to provide alternatives, which fall under two major categories, to the seal-weld fabrication process. The first one was motivated by the steel fabrication industry and …
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Winding and curing stress analysis of filament wound composites by finite elements
… and stiffness-to-weight ratios and falling fabrication costs. However, the interaction of some of the manufacturing process variables such as mandrel stiffness and thickness, winding tension and pattern, and cure cycle characteristics can lead to common defects such as delamination, matrix …
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Consideración de las imperfecciones en el análisis de placas de acero, de secciones armadas de puentes de acero y mixtos, mediante el método de los elementos finitos
… number of stiffeners to avoid the increase of fabrication costs. The Eurocode 3 “Design of steel structures” provides design methodologies for slender plates submitted to compression and the design of the stiffeners, if needed. In addition, the use softwares based on the Finite Elements Methods …
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Optimization of the thermal-hydraulic performance of the helium-cooled modular divertor with multiple jets
… which could simplify manufacturing and reduce fabrication costs for O(10^6) modules.
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Pulling a job shop into supply chain management
… grips without increasing cycle time or component fabrication costs. The author developed optimization techniques, queuing theory models, and simulation tools to guide the improvement efforts. The project team achieved a thirty-percent reduction in grip inventory in six months by consolidating …
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High Performance Inverted Pyramidal Texture for Silicon Photovoltaics
… in commercial solar cells mainly because of high fabrication costs, limited scalability of conventional fabrication techniques to thin wafers, and insufficient knowledge of the optimum grating parameters for silicon of different thicknesses. These issues become even more important as industry …
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Microelectromechanical handheld laser-scanning confocal microscope: application to breast cancer imaging
… patient prognosis, while reducing screening costs, treatment delay, and occurrences of unnecessary and potentially harmful medication. This dissertation investigates handheld instrumentation for laser-scanning confocal microscopy (LSCM) and its applicability to breast cancer detection and …
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Mass-customization in commercial real estate : how the aviation industry can help us create beautiful buildings that add value
… wing skin panels, distinguishing between fabrication technologies that are used for the manufacturing of single-curved and double-curved panels. The thesis proposes ways in which these processes can be adapted to the standards of the Architecture, Engineering and Construction industry, and …
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Digital Manufacturing Techniques for Microfluidic Device Fabrication
… devices are based on semiconductor microfabrication technology. Specifically, a combination of photolithography and soft lithography have been used where devices are built by molding a transparent, elastomeric, and biocompatible material called polydimethylsiloxane. However, this …
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Structural trends and phase relations in off-stoichiometric kesterite type compound semiconductors
… of thin film solar cells are fast (vacuum free) fabrication processes, fewer material usage and therefore lower fabrication costs. To further increase the efficiency of CZTS based thin film solar cells it is important to understand the limiting factors of the material system to reach similar …
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Atomic layer deposition of metal oxides for photovoltaic applications
… (PCE), >20%, tunable band gap and low fabrication costs. However, as the maximum theoretical efficiency outlined by the Shockley-Quiesser model for a single-junction perovskite solar cell is close to being reached, researchers have begun fabricating tandem solar cells to ensure the …
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