期刊
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
卷 57, 期 7, 页码 1513-1523出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TUFFC.2010.1582
关键词
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资金
- Texas MicroPower, Dallas, TX
- National Institute of Standards and Technology
High energy density piezoelectric composition corresponding to 0.9Pb(Zr0.56Ti0.44)O-3-0.1Pb[(Zn0.8/3Ni0.2/3) Nb-2/3]O-3 + 2 mol% MnO2 (PZTZNN) and 0.8[Pb(Zr0.52Ti0.48) O-3]-0.2[Pb(Zn1/3Nb2/3)O-3] (PZTPZN) were synthesized by conventional ceramic processing technique using three different sintering profiles. Plates of the sintered samples were used to fabricate the piezoelectric bimorphs with optimized dimensions to exhibit resonance in the loaded condition in the range of similar to 200 Hz. An analytical model for energy harvesting from bimorph transducer was developed which was confirmed by experimental measurements. The results of this study clearly show that power density of bimorph transducer can be enhanced by increasing the magnitude of product (d . g), where d is the piezoelectric strain constant and g is the piezoelectric voltage constant.
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