Journal
FUNCTIONAL MATERIALS LETTERS
Volume 3, Issue 1, Pages 79-81Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S1793604710000968
Keywords
Flexoelectricity; piezoelectric; composite
Categories
Funding
- Defense Advanced Research Projects Agency (DARPA)
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Flexoelectricity describes the physical phenomenon of the generation of electric polarization from mechanical strain gradient in solid insulators. In common dielectric materials, the flexoelectric coefficient is trivially small similar to 10(-10) C/m. In Ba(Sr,Ti)O(3) (BST) ceramics, flexoelectric coefficient up to 10(-4) C/m was observed. Such high coefficient makes it possible to design high piezoelectric response flexoelectric composites. In this letter, we will demonstrate that the newly designed flexoelectric composites could have piezoelectric properties better than conventional piezoelectric materials.
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