Posts Tagged ‘personalhealthIT

29
Sep
09

Nanosensing Transistors Powered by Stress

From Technology Review:

ACS/Nano Letters

ACS/Nano Letters

…new sensors consist of freestanding nanowires made of zinc oxide. When placed under stress, the nanowires generate an electrical potential, functioning as transistors.

Zhong Lin Wang, professor of materials science at Georgia Tech, has previously used piezoelectric nanowires to make nanogenerators that can harvest biomechanical energy, which he hopes will eventually be used to power portable electronics. Now Wang’s group is taking advantage of the semiconducting properties of zinc oxide nanowires–the electrical potential generated when the new nanowires are bent, allowing them to act as transistors.

Gee, maybe the global energy problem is solved! There’s plenty of stress out there.

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