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- W4285494825 abstract "Abstract This paper focuses on a Micro-electromechanical systems (MEMS) piezoelectric vector hydrophone with a U-groove. The influence of the U-groove on the directivity of the hydrophone is analyzed. The triaxial sensitivity and directivity of different structures are simulated and analyzed by the finite element method. The vector hydrophone chip is prepared by a micromechanical process, then encapsulated and tested. The results show that the MEMS piezoelectric vector hydrophone with a U-groove structure possessed a good directivity pattern in the form of an “8” shape. Compared with the z -axis sensitivity, the x -axis and y -axis sensitivities of the structure with a U-groove reduce by more than 15 dB and 26 dB, respectively. From the acquired experiment results, the structure with U-groove effectively improves the sensitivity of the device and reduces the structural directivity in the yz plane to a certain extent. Nonetheless, the directivity can meet the requirements of practical application." @default.
- W4285494825 created "2022-07-15" @default.
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- W4285494825 date "2022-08-15" @default.
- W4285494825 modified "2023-10-16" @default.
- W4285494825 title "Numerical simulation and experimental analysis of directivity of a MEMS piezoelectric vector hydrophone" @default.
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- W4285494825 doi "https://doi.org/10.35848/1347-4065/ac812e" @default.
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