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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/20266

    Authors: S.P.Yeh
    Contributor: Department of Engineering Science and Ocean Engineering, National Taiwan University
    Graduate Institute of Electronics Engineering, National Taiwan University
    Keywords: power harvesting
    MEMS generator
    PZT deposition
    piezoelectric generator
    stainless steel
    Date: 2013-11-02
    Issue Date: 2013-11-06 16:52:00 (UTC+8)
    Abstract: In this work we present a novel way to fabricate MEMS piezoelectric harvesting generators. A 304 stainless steel substrate instead of the conventional silicon based substrate was applied to overcome the brittle nature of such devices. The new fabrication process is much cheaper and the substrate material for fabrication is easier to obtain. The nature of stainless steel has better flexibility and the ability to sustain more stress, thus providing a very good substitute to silicon substrate. The piezoelectric material used is the commonly known PZT material, which is deposited on the stainless steel substrate by aerosol deposition method. The area coverage of electrodes has also being tested to determine the sweet spot for optimal performance. Our results has shown that when we have deposit the electrodes from the rigid end of the cantilever beam to the middle point, i.e. 1/2 of the cantilever beam is covered, we have a maximum output. The output performance at {3-1} mode is shown as the following: maximum open circuit output voltage of 4.2 VP-P and a maximum output power of 11 μW with a 2.9 VP-P output voltage at resonant frequency of 213.8 Hz at a 2.9 g acceleration level.
    Appears in Collections:[機械工程系所] Automation 2013- The 12th International Conference on Automation Technology

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