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| Human Hamster Wheel: Hacked Gadgets |
"When your heel hits the ground, as much as 20 watts of power (that’s 20 joules of energy per second) are generated as heat. To capture some of that energy, researchers developed a system that involves pressing droplets of liquid metal against an electrode.
"Here’s how it works: The team’s device resembles an electrostatic capacitor, which consists of two flat electrodes wired together with a small space between. When a voltage is applied to the electrodes, their opposing charges freeze them in place, but pushing on them changes the circuit’s capacitance, increases the voltage, and causes a current to run through the circuit, which can then be harvested."
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| Prototype Shoes |
And...what would this power be harvested for? It might even help trim the national waistline.
Discovery Magazine: Could Power-Scavenging Shoes Recharge Your Phone?
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