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July 30, 2011 / David Bleeker

Tiny Battery Embedded In a Nanowire Is the Smallest Battery Yet

I wonder how long before Apple puts this in their MacBooks…

Nanotechnology promises to enable tiny, intricate circuits powering devices on any surface. But unless they’re harvesting energy from something like a heartbeat, the devices can only be as small as the smallest battery.

Now researchers at Rice University have combined the two, packing an entire lithium-ion battery into a single nanowire. The developers say it’s as small as such a device can possibly get. The completed wire-batteries are about 50 microns tall, which is roughly the diameter of a human hair, according to Rice.

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