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 20 of 55 for “"Harvesting Energy"”.
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Harvesting energy from non-ideal vibrations
Energy harvesting has drawn significant interest for its potential to power autonomous low-power applications. Vibration energy harvesting is particularly well suited to industrial condition sensing, environmental monitoring and household environments where low-level vibrations are commonly found. …
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WO3-based bifunctional devices for light harvesting-energy storage
L'abstract è presente nell'allegato / the abstract is in the attachment
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Harvesting energy from electric fields for powering wireless sensors within air-insulated substations
… the power consumption of wireless sensors. Harvesting energy from the electric fields could be a viable way of supplying power to the wireless sensors if the technical challenges can be overcome.;This study reports the progress in the field of energy harvesting, surveys the electric fields …
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An in-situ interdiffusion method for harvesting energy from an aluminum-water reaction
… limited in their range and endurance by the energy density of their battery packs. Aluminum is an ideal energy source for AUVs because it exothermically reacts with water and is two orders of magnitude more energy dense than current lithium-ion batteries. An in-situ interdiffusion method for …
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Tracking and Exploiting Charge Carrier Movement and Photochemical Processes in Light-Harvesting Energy Materials
… needed to accelerate decarbonisation within the energy sector and beyond. Here, several novel material systems are studied to uncover physical properties which will dictate their suitability for use in state-of-the-art light-harvesting structures such as thin-film photovoltaics and …
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Production and characterization of aluminum alloys used for harvesting energy from the aluminum-water reaction
… a limited mission time due to limitations in the energy density of their battery packs. Aluminum is an ideal energy source for AUVs because it exothermically reacts with water, producing hydrogen as one of its by-product, and it is two orders of magnitude more energy dense than lithium ion …
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Nanostructures templated on biological scaffolds for light harvesting, energy transfer, charge transfer, and redox reactions
Solar energy provides an unparalleled promise to generate enormous amounts of clean energy. As the solar industry grows rapidly with a focus on power generation, new, but equally important challenges are emerging, including how to store and transfer the generated solar energy. Light-driven water …
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Theory of piezoelectric materials and their applications in civil engineering
The goal of this thesis is to explore ways of harvesting energy from a building. To be more specific, the conversion of mechanical energy into electrical energy using piezoelectric materials is studied. Applications of piezoelectric materials as actuators are also explored, with particular interest …
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Low-Power Communication Circuits for Net-Zero-Energy IoT Nodes
… presents a solution in the form of the Net-Zero-Energy Device, an IoT node that can power itself by harvesting energy from 5G radiation. To transmit data from weak 5G signals, the energy harvester was optimized for sensitivity, and the active blocks were optimized to minimize their leakage power. …
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Design and analysis of a thermoelectric energy harvesting system for powering sensing nodes in nuclear power plant
In this work, a thermoelectric energy harvester system aimed at harvesting energy for locally powering sensor nodes in nuclear power plant coolant loops has been designed, fabricated and tested. Different mathematical modeling methods have been validated by comparing with experimental results. The …
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Wireless communication system for data transfer and wireless power transmission
… negligible. The WRCS system is also capable of harvesting energy that impinges the communication system. The size of the wireless communication system is designed based on the physical dimensions of the rectifier, the rectifiers impedance, as well as the operating frequency of the data transfer …
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Low energy digital circuit design using sub-threshold operation
… networks or medical applications, low energy operation is the primary concern instead of speed, with the eventual goal of harvesting energy from the environment. Sub-threshold operation offers a promising solution for ultra-low-energy applications because it often achieves the minimum …
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Physiological effects of heterologous expression of proteorhodopsin photosystems
… plays an important role in the marine ecosystem, harvesting energy from sunlight for a diverse community of hetertrophic organisms. The simple proteorhodopsin photosystem (PRPS) composed of six to seven genes is sufficient for producing a functional light-driven proton pump, capable of powering …
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COMPUTATIONAL ANALYSIS OF TWIN-SKIN CLOTH SAILS FOR HIGH-PERFORMANCE SAILING VESSELS
… on cargo vessels or even be used on future energy ships. Energy ships are conceptual vessels that would roam the oceans harvesting energy using hydroelectric turbines and the power developed by sails. To further the estimates of energy ship power production, a towable drag device was …
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Designing and Optimizing Magnetohydrodynamic Induction Marine Energy Harvester
… generation presents a promising approach for harvesting energy from marine environments, offering a sustainable alternative for powering naval assets and coastal infrastructure. While energy harvesting technologies are widely used in terrestrial and aerial applications, their implementation in …
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A design study to harvest electrical energy from walking and running motions
This thesis studies two different methods of harvesting electrical energy from everyday activities such as walking and running. It is a design study that aims to create a device which can be attached or incorporated into a shoe, ideally a military boot, so that soldiers can charge back-up batteries …
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Assessment of Power Generation, Dynamic Interaction and Human Comfort of a Suspended Energy Harvesting Backpack
… missions). What’s more, no matter how much energy the battery stores, it will drain eventually. In addition, large battery will add extra weight and occupy space. Substitute power supply that conquer these aforementioned dilemmas are thus highly desirable. Energy harvesting by its nature …
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Evaluation of Internal Fin Geometry for Heat Transfer Enhancement in Automobile Exhaust Energy Harvesting Systems
… currently being explored for their potential in harvesting energy from automobile exhaust. TEGs in form of an appropriate TEG- Heat exchanger module can utilize the temperature difference between the hot exhaust gases and the automobile coolant and convert it into electrical voltage. The amount …
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MICRO-CIRCUIT DIODE FOR ULTRA-LOW-POWER ENERGY HARVESTING
Harvesting energy from ultra-low-power vibration energy sources typically employs a rectifier circuit as the first power conditioning stage. The Schottky diode has a 0.15 V - 0.2 V threshold voltage and can not extract energy efficiently at low voltage. Other technologies such as MOSFET bridge or …
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Growth of Indium Nitride Quantum Dots by Molecular Beam Epitaxy
… for finding new alternative/clean methods for harvesting energy and determining ways to minimize energy consumption. III-nitride materials are of interest for optoelectronic and electronic device applications such as high efficiency solar cells, solid state lighting (LEDs), and blue laser …
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