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 7 of 7 for “"PMUT"”.
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Design and modeling of a PZT thin film based piezoelectric micromachined ultrasonic transducer (PMUT)
… micromachined ultrasonic transducer (PMUT) based on the piezoelectric thin film deposition of lead zirconate titanate (PZT) is defined. Through high frequency vibration (1-16MHz) of a thin plate, the PMUT transmits and receives pressure pulses to construct medical ultrasound images as …
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Design and Modeling of Piezoelectric Micromachined Ultrasonic Transducer (PMUT) using a Multi-User MEMS Process for Medical Imaging
… Micromachined Ultrasonic Transducer (PMUT) is proposed to work at lower frequency ranges for higher penetration aiding imaging applications while operating at a lower voltage. In this work, a comprehensive study based on the Multi-User MEMS Process (MUMPs) has been conducted to …
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Piezoelectric micro-machined ultrasonic transducers for medical imaging
… micro-machined ultrasonic transducers (pMUTs) an attractive alternative to the current bulk piezoelectric technology. This thesis aims to realize pMUT potential starting with the development of an effective single cell model that is further scaled to optimize multi-cell elements in a 1D …
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Piezoelectric MEMS for Energy Conversion in Biomedical Devices
… micromachined ultrasonic transducers (PMUTs) to tackle the challenges of energy generation and sensing in biomedical devices via ultrasound sources. An equivalent circuit method with defined lumped parameters was developed to understand the performance metrics of PMUTs. Leveraging …
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Common ABCA4 mutations in South Africans: frequencies, pathogenicity and genotype-phenotype correlations
… members. Bioinformatic tools (PolyPhen, SIFT, PMUT, PANTHER PSEC, ESEfinder, and the BDGP Splice Site Prediction programme) revealed the predicted pathogenicity of the seven mutations to be as follows (in order of decreasing pathogenicity): C1490Y, R602W, V256V, R152X, G863A, L2027F, and …
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Ink jet printing of PZT thin films for MEMS
… of thin film PZT and the printed PZT based pMUT confirmed the properties of the film are within the range required for a high performance piezoelectric MEMS devices.
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Application of Diagnostic Methods to Assess Ageing Processes in Polymers
The research objectives of this work aim to contribute to the understanding and assessment of ageing in semi-crystalline polymers through destructive and non-destructive tests, and to study the feasibility of acoustic means to be utilized for future age-monitoring systems. This called for a …