Device Could Harvest Wasted Energy From Wi-Fi, Satellite Signals

Power Up Duke University A wireless device developed by researchers at Duke University that converts microwaves into electricity could eventually harvest Wi-Fi or satellite signals for power, according to its creators. It could also one day be built into cell phones to let them charge while not in use, they say. Its energy-harvesting capabilities come courtesy of a metamaterial, a synthetic material engineered with characteristics not found in nature, like the ability to bend light the wrong way...