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- Antimony compounds (1)
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- Bismuth compounds (1)
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- Emergency landings (1)
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- Injectors (1)
- Landing site detection (1)
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- Plasma jets (1)
- RF guns (1)
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- Solar energy (1)
- Superlattices as materials (1)
- Tellurium compounds (1)
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Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Fault Detection System For Solar Tracking Applications, Hareen Sekhar Illa
Fault Detection System For Solar Tracking Applications, Hareen Sekhar Illa
Electrical & Computer Engineering Theses & Dissertations
Oil, coal and natural gas reserves are being depleted faster than forecasted due to continued increase in demand for energy sources. We need, therefore, to develop renewable energy sources, such as solar, wind, biomass, geothermal, hydro power and tidal energy. In spite of having very high potential, harvesting solar energy has been a challenge because of the relatively low efficiency of solar cells. In the past few years different methods have been developed to increase the efficiency of the photovoltaic (PV) system: (I) improve the efficiency of solar cells (ill use a solar tracking system to increase the received solar …
Dynamics Of Non-Thermal Plasma Jets Under Variable Pressure, Mehmet Arda Akman
Dynamics Of Non-Thermal Plasma Jets Under Variable Pressure, Mehmet Arda Akman
Electrical & Computer Engineering Theses & Dissertations
Non-thermal plasma (NTP) jets driven by short DC pulses have attracted the attention of researchers within the past decade due to their promising bio-medical applications in the fields of wound healing, cancer treatment and sterilization. The ability to operate at atmospheric pressure, room temperature and simple device configuration has greatly contributed to their appeal and adoption in the plasma science community. However, the mechanisms that sustain the plasma generation and propagation in ambient air are currently a topic of debate. For instance, what appears as a continuous stream of a plasma plume extending outwards from a plasma device into the …
Synthesis Of A Superlattice Structure Of Alternating Layers Of Antimony Telluride And Bismuth Telluride By Atomic Layer Deposition For Thermoelectric Applications, David Nminibapiel
Synthesis Of A Superlattice Structure Of Alternating Layers Of Antimony Telluride And Bismuth Telluride By Atomic Layer Deposition For Thermoelectric Applications, David Nminibapiel
Electrical & Computer Engineering Theses & Dissertations
Alloys composed of bismuth, antimony and telluride compounds exhibit very high figure of merit ZT values at relatively low temperatures, making them exceptional thermoelectric materials. Advancement in thermoelectric devices and applications hinges on increasing ZT, which is a ratio of the thermoelectric power factor to the thermal conductivity. One of the proposed avenues to achieving this goal is the use of low dimensional structures such as quantum wells, quantum dots, superlattices (SL) and nanolaminates to affect heat transport. SL structures can effectively confine charge carriers as well as scatter phonons which contribute significantly to thermal conductivity. In this thesis, the …
Optimization Framework For A Radio Frequency Gun Based Injector, Alicia S. Hofler
Optimization Framework For A Radio Frequency Gun Based Injector, Alicia S. Hofler
Electrical & Computer Engineering Theses & Dissertations
Linear accelerator based light sources are used to produce coherent x-ray beams with unprecedented peak intensity. In these devices, the key parameters of the photon beam such as brilliance and coherence are directly dependent on the electron beam parameters. This leads to stringent beam quality requirements for the electron beam source. Radio frequency (RF) guns are used in such light sources since they accelerate electrons to relativistic energies over a very short distance, thus minimizing the beam quality degradation due to space charge effects within the particle bunch. Designing such sources including optimization of its beam parameters is a complex …
A Vision-Based Automatic Safe Landing-Site Detection System, Yufei Shen
A Vision-Based Automatic Safe Landing-Site Detection System, Yufei Shen
Electrical & Computer Engineering Theses & Dissertations
An automatic safe landing-site detection system is proposed for aircraft emergency landing, based on visible information acquired by aircraft-mounted cameras. Emergency landing is an unplanned event in response to emergency situations. If, as is unfortunately usually the case, there is no airstrip or airfield that can be reached by the un-powered aircraft, a crash landing or ditching has to be carried out. Identifying a safe landing-site is critical to the survival of passengers and crew. Conventionally, the pilot chooses the landing-site visually by looking at the terrain through the cockpit. The success of this vital decision greatly depends on the …