期刊
FUNCTIONAL MATERIALS LETTERS
卷 3, 期 1, 页码 79-81出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S1793604710000968
关键词
Flexoelectricity; piezoelectric; composite
资金
- Defense Advanced Research Projects Agency (DARPA)
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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