Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

Sheng Xu, Benjamin J. Hansen and Zhong Lin Wang ()
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Sheng Xu: School of Materials Science and Engineering, Georgia Institute of Technology
Benjamin J. Hansen: School of Materials Science and Engineering, Georgia Institute of Technology
Zhong Lin Wang: School of Materials Science and Engineering, Georgia Institute of Technology

Nature Communications, 2010, vol. 1, issue 1, 1-5

Abstract: Abstract 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 °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 ~0.7 V, current density of 4 μA 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.

Date: 2010
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DOI: 10.1038/ncomms1098

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