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Technology update

Oct 16, 2007

Piezoelectric nanowires power up under load

Foot-powered radio tags and ultra-sensitive vibration sensors are just two of the applications under discussion for piezoelectric nanowires that yield electricity when bent or stretched. Scientists have already demonstrated that nanowires made from zinc oxide (ZnO) and gallium nitride (GaN) generate electricity when under strain, but the materials' low piezoelectric charge constant means that the process is relatively inefficient.

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