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 “"Power MEMS"”.
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Combustion systems for power-MEMS applications
… to develop a micro-scale gas turbine engine for power generation and micro-propulsion applications, this thesis presents the design, fabrication, experimental testing, and modeling of the combustion system. Two fundamentally different combustion systems are presented; an advanced homogenous …
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Towards and industrial ecosystem for power MEMS
… is concerned with the commercial applications of MEMS (Micro-Electro-Mechanical Systems) manufacturing processes to advanced energy technologies. This field of engineering has come to be known as Power MEMS. Four such technologies are singled-out for detailed consideration, based on the efforts …
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Magnetic machines and power electronics for power MEMS applications
… permanent-magnet (PM) generators, and their power electronics, for use in Watt-level Power MEMS applications such as a microscale gas turbine engine. The generators are three-phase, axial-flux, synchronous machines, comprising a rotor with an annular PM and ferromagnetic core, and a stator …
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Experimental Investigation and Modeling of Scale Effects in Micro Jet Pumps
… an active effort to develop hydrocarbon-fueled power generation and propulsion systems on the scale of centimeters or smaller. This effort led to the creation and expansion of a field of research focused around the design and reduction to practice of Power MEMS (microelectromechanical systems) …
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MEMS turbomachinery rotordynamics : modeling, design and testing
… encountered for the successful operation of high-power-density micro-devices lies in the stable operation of the bearings supporting the high-speed rotating machinery. This thesis presents the analysis, design, microfabrication, testing and operation of high speed micro-hydrostatic gas bearings …
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Theory for hydrostatic gas journal bearings for micro-electro-mechanical systems
… project is to develop high-speed rotating Power MEMS (Micro-Electro-Mechanical Systems) using computer chip fabrication technologies. To produce high power (10-50 W) in a small volume (less than one cubic centimeter), the micro-turbo-machinery must be spun at a rotational speed on the order …
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GaN Electronics for High-Temperature Applications
… (room temperature) transistors for RF, power, MEMS, and mixed-signal applications. Previous works on high-temperature (HT) electronics have been typically limited to two aspects, namely, the high-temperature robustness of discrete transistors and basic circuit building blocks, which are …
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Integrated micro fuel cells with on-board hydride reactors and autonomous control schemes
Miniaturization of power generators to the MEMS scale, based on the hydrogen-air fuel cell, is the object of this research. The micro fuel cell approach has been adopted for advantages of both high power and energy densities. On-board hydrogen production/storage and an efficient control scheme that …
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Micro-Evaporator Design and Investigation of Phase Change in Tailored Microchannels
… research has been conducted in the area of MEMS cooling devices, taking advantage of the increased heat transfer characteristics in microfabricated structures. While significant advances in microchannels can be found in the literature, little work is being done to develop microchannels with …
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Development of a high power density combustion system for a silicon micro gas turbine engine
… capable of providing 10-50 Watts of electrical power in a package less than one cubic centimeter in volume, this thesis presents the design, fabrication, packaging and testing of the first combustion system for a silicon micro heat engine. The design and operation of a microcombustor is …
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Electromechanical response of textured ferroelectric PZT thin film stacks
… advantages to microelectromechanical systems (MEMS) due to their low power requirements, large displacements, high work and power densities, as well as high sensitivity in a wide dynamic range. The performance of PZT-based MEMS can be further improved by increasing the piezoelectric response of …