Abstract
High energy density piezoelectric composition corresponding to 0.9Pb(Zr0.56Ti0.44)O3-0.1Pb[(Zn 0.8/3Ni0.2/3) Nb2/3]O3 + 2 mol% MnO2 (PZTZNN) and 0.8[Pb(Zr0.52Ti0.48)O 3]-0.2[Pb(Zn1/3Nb2/3)O3] (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 ∼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.
| Original language | English (US) |
|---|---|
| Article number | 5507654 |
| Pages (from-to) | 1513-1523 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control |
| Volume | 57 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2010 |
| Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received november 22, 2009; accepted March 28, 2010. This research was sponsored by Texas MicroPower, dallas, TX, and the national Institute of standards and Technology. The authors are with the center for Energy Harvesting Materials and systems (cEHMs) department of Mechanical Engineering, Virginia Tech, Blacksburg, Va (e-mail: [email protected]). digital object Identifier 10.1109/TUFFc.2010.1582