Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

被引:506
作者
Xu, Sheng [1 ]
Hansen, Benjamin J. [1 ]
Wang, Zhong Lin [1 ]
机构
[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA
来源
NATURE COMMUNICATIONS | 2010年 / 1卷
关键词
NANOGENERATOR; ENERGY; FATIGUE; DRIVEN;
D O I
10.1038/ncomms1098
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Harvesting energy from irregular/random mechanical actions in variable and uncontrollable environments is an effective approach for powering wireless mobile electronics to meet a wide range of applications in our daily life. Piezoelectric nanowires are robust and can be stimulated by tiny physical motions/disturbances over a range of frequencies. Here, we demonstrate the first chemical epitaxial growth of PbZrxTi1-xO3 (PZT) nanowire arrays at 230 degrees C and their application as high-output energy converters. The nanogenerators fabricated using a single array of PZT nanowires produce a peak output voltage of similar to 0.7 V, current density of 4 mu A cm(-2) and an average power density of 2.8 mW cm(-3). The alternating current output of the nanogenerator is rectified, and the harvested energy is stored and later used to light up a commercial laser diode. This work demonstrates the feasibility of using nanogenerators for powering mobile and even personal microelectronics.
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页数:5
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