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.
Micro-supercapacitors could enable future geeks to go longer without recharging their smartphones or computers. Researchers have developed a way to build the energy-storing supercapacitors by using microfabrication methods similar to those which create microchips for electronic devices, according to ScienceDaily.