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- W2118220612 abstract "Millimeter-sized ferroelectric monomorph sonar transducers have been built using sol-gel PZT on micromachined silicon wafers. Second generation 8/spl times/8 transducer arrays have been built and tested in water in the frequency range of 0.3 to 2 MHz. Improvements to the sol-gel process have yielded high-quality, crack-free PZT films up to 12 /spl mu/m in thickness, which leads directly to higher sensitivity and figure of merit for acoustic transducers. 4-/spl mu/m thick films had longitudinal piezoelectric coefficient d/sub 33/=140-240 pC/N, remanent polarization=28 /spl mu/C/cm/sup 2/, coercive field=30 kV/cm, and dielectric constant=1400. Test results are presented, including frequency response, beam patterns, and sensitivity. High-resolution acoustic images have been generated using these transducers with a four-element underwater acoustic lens. Potential applications for these transducers include high-frequency imaging sonars, medical ultrasound, ultrasonic communication links, and flaw detection (NDT)." @default.
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- W2118220612 date "2002-12-24" @default.
- W2118220612 modified "2023-09-24" @default.
- W2118220612 title "Integrated ferroelectric monomorph transducers for acoustic imaging" @default.
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- W2118220612 doi "https://doi.org/10.1109/isaf.1996.602703" @default.
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