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- W3175737028 abstract "This paper reports a bimorph pinned piezoelectric micromachined ultrasonic transducer (PMUT) for enhanced sound pressure output and electromechanical coupling factor for space imaging applications. An equivalent circuit model has been built to analyze the dynamic behavior of PMUTs and prototype devices have been designed, fabricated. Experimental results show a 58% measured increase in the electromechanical coupling factor and pulse-echo measurements show a 4-meter traveling distance in air under a 133 kHz driving frequency. As a demonstration example, a relatively long-distance (>1.5 meters) ultrasound imaging test in air is conducted using a 4×4 bimorph, pinned dual-electrode PMUTs array based on the transmission beamforming scheme. As such, this work enhances and extends the PMUT performances and capabilities for potential broad applications. [2021-0102]" @default.
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- W3175737028 date "2021-08-01" @default.
- W3175737028 modified "2023-10-09" @default.
- W3175737028 title "Bimorph Pinned Piezoelectric Micromachined Ultrasonic Transducers for Space Imaging Applications" @default.
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- W3175737028 doi "https://doi.org/10.1109/jmems.2021.3090374" @default.
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