Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 16, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4824831
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Funding
- Special Coordination Funds for Promoting Science and Technology
- Grants-in-Aid for Scientific Research [13J04346] Funding Source: KAKEN
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We propose a ferroelectric dipole electret composed of polarized lead zirconate titanate. Deep insight into the physics behind the parallel plate capacitor theoretically predicts that we can extract large electric field near the surface of the ferroelectric dipole electret by increasing its surface charge density and thickness. Experiment for ferroelectric dipole electret shows good agreement with the theory. The maximum output power density of electrostatic vibration energy harvesters using the ferroelectric dipole electret was 78 mu W/cm(3), a three-fold increase over a conventional polymer electret. Our results will pave the way for use of ferroelectrics as electrets. (C) 2013 AIP Publishing LLC.
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