Have you encountered the phone battery is about to run out fast charger available but did not close the embarrassing situation? If yes, then you must believe in endless tangle. Recently, according to foreign media reports, two students Pratt School of Engineering at Duke University have invented a mobile phone WIFI signal can be converted into a current of new technologies, is expected to completely replace the cell phone charger in the future. 

Sources said the two students from Duke University's Alexander & middot; Kate Ke (Alexander Katko) and 艾伦霍斯克 (Allen Hawkes) developed a WIFI signal can be converted into current equipment. The device uses a very cheap material, the current volume is still relatively large, but Alexander and Allen said they will continue to study, the volume of such equipment be small enough to be fitted to the phone until the interior. Today, everywhere WIFI signal, if the device preinstalled in the phone, then who will go with the charger will charge the phone it? 

Allegedly, two students designed this efficient equipment is actually a small five-unit array, can be extracted 7 volts Current & mdash the air everywhere in the micro-wave in; & mdash; This is enough to drive a small USB devices. If you want more current how to do? No problem, we only need the five cell array can then add a unit. 

In addition to ease of use, the technology there is a very big advantage & mdash; & mdash; green. Essentially, the invention of Alexander and Alan actually consume energy has re recover, because in a sense, invisible in the air these resources is not a waste, but it is worth mentioning is its conversion efficiency as high as 37%. 

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