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 98 for “"energy harvesters"”.
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Electromechanical Modeling of Piezoelectric Energy Harvesters
Vibration-based energy harvesting has been investigated by several researchers over the last decade. The ultimate goal in this research field is to power small electronic components (such as wireless sensors) by using the vibration energy available in their environment. Among the basic transduction …
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Shape Optimization of Microfiber Composite Energy Harvesters
<p>A model of energy harvesting beam with a piezoelectric material, microfiber composite (MFC), in a unimorph configuration was setup in Matlab using the governing equations of motions of a coupled electromechanical system. The equations of motion were derived using Hamilton’s variational …
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AI-assisted Development of Energy Harvesters for POCT
This thesis, titled "AI-assisted Development of Energy Harvesters for POCT" investigates innovative energy harvesting technologies and neural network optimization to enhance design of pathogen detection and energy harvesting in biomedical applications. The work is centered on the design and …
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Multiferroic BiFeO3 films and nanostructures for hybrid energy harvesters
… aims to develop and integrate lead-free hybrid energy harvesters for the car industry, the following work has been focused on the deposition by metal-organic vapor phase deposition of multiferroic BiFeO3 films and nanostructures. BiFeO3 is a multiferroic material and can maintain its properties …
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Single-degree-of-freedom energy harvesters by stochastic excitation
… criteria take into account the maximum possible energy harvested for a given response level, which is a quantity that is directly connected to the size of the harvesting configuration. We prove that the derived criteria are invariant with respect to magnitude or temporal rescaling of the input …
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Design of test bench apparatus for piezoelectric energy harvesters
… microelectromechanical system (MEMS) energy harvester being developed by the Micro & Nano Systems Laboratory research group at MIT. Piezoelectric MEMS energy harvesters are micro-devices that are able to harvest energy from their ambient vibrations using piezoelectric material …
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Nonlinear beam-based vibration energy harvesters and load cells
… of oscillator parameters. Various human motion energy harvester configurations that use the nonlinear spring were numerically optimized for power, robustness, and adaptivity. Based on the optimization results, both the nonlinear and linear devices studied in this thesis generate more power per …
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The design of low-frequency, low-g piezoelectric micro energy harvesters
A low-frequency, low-g piezoelectric MEMS energy harvester has been designed. Theoretically, this new generation energy harvester will generate electric power from ambient vibrations in the frequency range of 200~30OHz at excitation amplitude of 0.5g. Our previous energy harvester successfully …
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Materials and device design for MEMS piezoelectric mechanical vibration energy harvesters
Piezoelectric vibration energy harvesters (PVEHs) for microelectromechanical systems (MEMS) have received considerable attention as an enabling technology for self-powered wireless sensor networks. MEMS-PVEHs are particularly attractive because of the potential to deliver power indefinitely and …
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Feasibility of passive electromagnetic dampers as energy harvesters in large structures
… has been a trend in structural design toward energy efficient design and motion based design. The strategy of motion based design is controlling the movement of structures to meet certain dynamic response requirements by damping the structure. Structural damping dissipates the energy of …
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Internet of Things for Vehicle Health Monitoring powered by Electromagnetic Energy Harvesters
L'abstract è presente nell'allegato / the abstract is in the attachment
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Experimental Realisation of Energy Harvesters built from Quantum Dots and Quantum Wells
… both theoretically and experimentally, an energy harvester built from two resonant-tunnelling quantum dots. A device, proposed by Jordan et al. [1], harvests energy from an area of 90 μ m2 of a two-dimensional electron gas (2DEG), using the energy-selective transport of electrons through a …
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Ferroelectric/piezoelectric flexible mechanical energy harvesters and stretchable epidermal sensors for medical applications
… suggest utility in a variety of sensors and energy harvesting components, with lightweight construction, attractive mechanical properties and potential for implementation over large areas, with promising application in unusual bio-integrated electronics, such as self-powered cardiac …
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A Study on Energy Harvesters for Physical Unclonable Functions and Random Number Generation
… for data encryption. Transducers used in the energy harvesting systems of wireless sensor nodes, can generate the PUFs and RNGs. These transducers include piezoelectric devices (piezo), thermoelectric generators (TEG) and solar cells. This research studies the electrical properties of …
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A life cycle assessment of energy harvesters in pre-existing European water distribution networks
… of the current global context is the green energy transition. Accordingly, novel sustainable generation techniques such as energy harvesting from kinetic energy are becoming increasingly important. This work, as part of the H-Hope Project, addresses this interest by presenting an …
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Control of Vibratory Energy Harvesters in the Presence of Nonlinearities and Power-Flow Constraints
… power. Such systems, referred to as vibratory energy harvesters, have a number of useful of applications, ranging in scale from self-powered wireless sensors for structural health monitoring in bridges and buildings to energy harvesting from ocean waves. One of the most challenging aspects of …
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Performance of Self-excited Energy Harvesters with Tip Bodies of Non-circular Cross Section Shapes
… study on the performance of self-excited energy harvesters with non-circular tip body shapes has been performed. The two tip body shapes analyzed correspond to a half cylinder and a square cross section. Experiments are carried out in the wind tunnel to record the voltage output of the …
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Wireless, Battery-Free, High-Sensitivity 5G RF Energy Harvesters for Next Generation IoT Sensor Tags
… of battery-free IoT devices powered by ambient energy harvesting has gained significant attention. Among various energy-harvesting technologies, radio frequency (RF) energy harvesting has emerged as a promising solution for powering IoT devices. By harvesting energy from ambient RF signals in …
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