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  • Fabrication and analysis of high-performance piezoelectric MEMS generators

    Author(s)
    Tang, Gang
    Liu, Jing-quan
    Yang, Bin
    Luo, Jiang-bo
    Liu, He-sheng
    Li, Yi-gui
    Yang, Chun-sheng
    He, Dan-nong
    Dao, Viet Dzung
    Tanaka, Katsuhiko
    Sugiyama, Susumu
    Griffith University Author(s)
    Dao, Dzung V.
    Year published
    2012
    Metadata
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    Abstract
    In this paper, we have designed a fabrication process for microgenerators by bonding a piezoelectric ceramic Pb(Zr,Ti)O3 (PZT) plate to a silicon on insulator (SOI) wafer. The key techniques of the process include the low-temperature bonding technique using conductive epoxy resin, thinning of the bulk PZT using mechanical lapping and wet-etching combined method, and the micromachining of bulk ceramics by dicing. Through the development and optimization of the process, a piezoelectric MEMS power generator array was successfully fabricated. The typical device is selected to characterize the output performance of the microgenerators, ...
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    In this paper, we have designed a fabrication process for microgenerators by bonding a piezoelectric ceramic Pb(Zr,Ti)O3 (PZT) plate to a silicon on insulator (SOI) wafer. The key techniques of the process include the low-temperature bonding technique using conductive epoxy resin, thinning of the bulk PZT using mechanical lapping and wet-etching combined method, and the micromachining of bulk ceramics by dicing. Through the development and optimization of the process, a piezoelectric MEMS power generator array was successfully fabricated. The typical device is selected to characterize the output performance of the microgenerators, while the composite beam dimension of PZT and silicon layer is about 3080 孠נ800 孠נ31 孠and the dimension of Ni proof mass is about 900 孠נ800 孠נ450 孮 The experimental results show that the output voltage, output power and power density of this device are 2.72 VP-P, 11.56 嗠and 28?856.7 嗠cm-3 at the resonant frequency of 514.1 Hz when it matches an optimal resistive load of 70 kO under the excitation of 1g acceleration. The output performance of this device is higher, compared with that of other reported MEMS power generators, which demonstrates that this novel technique has great potential to fabricate high-performance piezoelectric MEMS energy harvester.
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    Journal Title
    Journal of Micromechanics and Microengineering
    Volume
    22
    Issue
    6
    DOI
    https://doi.org/10.1088/0960-1317/22/6/065017
    Subject
    Engineering
    Functional materials
    Publication URI
    http://hdl.handle.net/10072/52926
    Collection
    • Journal articles

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