Duke University researchers are developing a new technology that can efficiently wireless microwave signal is converted into electrical energy, so they can easily charge the phone. Some critics say that this means that the future mobile phones may never need a charger.
Duke University recently released a press release said, in principle, this technique is similar to the solar panels, but it is not the energy conversion, but the satellite communication signals, wireless network signal and other microwave signal, the key to success lies manufactured able to “capture” various forms of wave energy conversion “metamaterials.”
In the study, researchers at a circuit board inserted five fiber glass, and then use copper wires to connect, can be made of the “capture” of the microwave signal simple “super material” circuits.According to the researchers introduced this circuit manufacturing costs low, but the energy conversion efficiency of 36.8%, with the conversion efficiency of solar panels is comparable. The output voltage of the device is 7.3 volts. In contrast, the daily life of small electronic devices USB charger output voltage is only 5 volts.
The researchers said that when the underlying technology is mature, this “super material” circuit may be made very small, for integration into the internal phone to use a variety of microwave signals to charge the phone. “So far a lot about ‘metamaterials’ work is theoretical, and our research shows that ‘metamaterials’ in the consumer electronic products come in handy.”