Currently, up to 100 PZT strips can fit in a millimeter of space, and since it's being placed on silicone, the technology is biocompatible. McAlpine says the chips could be implanted in the body to perpetually power medical devices, and the body wouldn't reject them. It could also be used in shoes to generate power from walking, and much more.
Interestingly, while the chips create electricity when flexed, the reverse is also true, they flex when electrical current is applied, opening the door for even more possibilities. Princeton didn't mentioned when the technology might find mainstream use.
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