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 8 of 8 for “"Critical Voltage"”.
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DC, RF, and Thermal Characterization of High Electric Field Induced Degradation Mechanisms in GaN-on-Si High Electron Mobility Transistors
… energy, a low dielectric constant, and a high critical breakdown field. The aforementioned qualities make GaN a prime candidate for high-power and radiation-hardened applications using a smaller form-factor. Several different types of semiconductor substrates have been considered for their …
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Physics of electrical degradation in GaN high electron mobility transistors
… reliability is a difficult issue due to the high voltage of operation. In order to improve reliability, it is essential to develop detailed physical understanding of the fundamental degradation mechanisms. In this thesis, we investigate the physical mechanisms behind the electrical degradation of …
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Static and Dynamical Properties of Ferroelectrics and Related Material in Bulk and Nanostructure Forms
… are experimentally shown to have a much lower critical voltage in current-voltage curves. However, the exact underlying reason is unknown. In this dissertation, we take the advantage of the effective Hamiltonian method and linear-scale three-dimension fragment method to study the electronic …
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Reliability of GaN high electron mobility transistors on silicon substrates
… We conclude from these experiments that high voltage stress conditions are more effective in degrading the device than high current conditions. High voltage stress is found to impact the device in two different ways. The first is increased trapping in the large number of traps in the highly …
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On-line Dynamic Security Assessment in Power Systems.
… method is to early and reliably determine the critical machine cluster, which is the group of generators likely to lose synchronism. Therefore, a novel approach to identify the critical machine cluster is proposed in the thesis. This approach uses a new coupling coefficient, which is a measure …
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Influence of external environment on fluid/ion transport in confined nanoscale systems
… revealed a non-monotonic growth in the current-voltage characteristics in a nanoporous membrane. The experimental observations predicted a deviation from the classical diffusion-limited current transport theory, which highlights a saturation of the current density at higher applied voltages with …
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Surface characterization of self-assembled monolayers for applications of selective ionic transport through nanoporous membranes
… across conductive NCAMs by determining the critical voltage range at which potentials can be applied with minimum ion conduction through the SAM. Future work will also be addressed where it is suggested to explore the idea of competing effects between the contributions of the diffuse layer …