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 “"Hall sensors"”.
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Mechanical stress and stress compensation in Hall sensors
Silicon magnetic sensors based on the Hall effect have proven to be an excellent sensor choice for many applications, such as position sensing, gear-tooth sensing, contact-less switching and linear sensing. Although a sensor can be trimmed over temperature before it is shipped to the customer, …
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Integrating graphene Hall sensors with co-designed silicon circuits for high-throughput magnetic biosensing
… such as graphene. For example, graphene Hall-effect sensors (GHSs) greatly outperform commercial silicon magnetic-field sensors and could significantly improve the performance of sensor arrays used in magnetic imagers and biosensing. However, the 2D nature of graphene leads to undesirable …
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Hall Effect Modeling in FEM Simulators and Comparison to Experimental Results in Silicon and Printed Sensors
… models for thin-film semiconductor-based Hall sensors were developed using secondary data in order to understand their behavior under strong magnetic fields. Given a device geometry and charge carrier density and mobility, the models accurately calculated sensor resistance, Hall voltage …
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Characterization of ferromagnetic saturation at 4.2K of selected bulk rare earth metals for compact high-field superconducting cyclotrons
… various applied fields. Data was obtained with Hall sensors mounted at the tips of the cylinders, and a powerful analytical calculation was derived to allow estimation of the saturation magnetization from this surface data. If the metal is saturated in a uniform, vertical magnetic field, the …
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Miniaturized electromagnetic biosensors for circulating cancer biomarker detection
… cells in 5 uL samples. Second, we describe micro-Hall magnetometer that molecularly profiles single cancer cell with magnetic multiplexing. The micro-Hall magnetometer, which consisted of an array of 7 um x 7 um Hall sensors, showed its capability to differentiate magnetic particles with distinct …
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Power Density Optimization of SiC-based DC/AC Converter for High-Speed Electric Machine in More/All-electric Aircraft
… achieving optimal power density faces challenges due to the unique requirements and conditions of aircraft applications. A primary obstacle is optimizing the topology and parameters of the dc/ac converter system to achieve high power density while adhering to the stringent aerospace EMI …
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Optimisation of Hall cross devices towards magnetic particle counting
… application of magnetic fields. In this thesis, Hall cross sensors are explored for the detection and enumeration of large numbers of magnetic particles for applications in magnetic immunoassays. The response of a Hall cross to a magnetic particle is directly proportional to the stray field of …
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Návrh absolutních snímačů polohy s Hallovými sondami
Práce se zabývá možností použití lineárních Hallových snímačů vyráběných jako integrované obvody pro konstrukci absolutních snímačů polohy a natočení. Hallovy snímače ve spojení s permanentními magnety umožňují rozměrově malou konstrukci. V této práci je popsán návrh a řešení absolutního lineárního …