期刊
NANO LETTERS
卷 12, 期 5, 页码 2238-2242出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl204334x
关键词
PMN-PT nanowires; hydrothermal; piezoelectric constant; PFM; nanogenerators
类别
资金
- National Science Foundation-MRSEC through the Princeton Center for complex Materials [DMR-0819860]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [819860] Funding Source: National Science Foundation
A profound way to increase the output voltage (or power) of the piezoelectric nanogenerators is to utilize a material with higher piezoelectric constants. Here we report the synthesis of novel piezoelectric 0.72Pb(Mg1/3Nb2/3)O-3-0.28PbTiO(3) (PMN-PT) nanowires using a hydrothermal process. The unpoled single-crystal PMN-PT nanowires show a piezoelectric constant (d(33)) up to 381 pm/V, with an average value of 373 +/- 5 pm/V. This is about 15 times higher than the maximum reported value of 1-D ZnO nanostructures and 3 times higher than the largest reported value of 1-D PZT nanostructures. These PMN-PT nanostructures are of good potential being used as the fundamental building block for higher power nanogenerators, high sensitivity nanosensors, and large strain nanoactuators.
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