14 DAY TRIAL // The fact that you have all sorts of mobile devices such as laptops, cell phones and portable music player that you can carry around with you, probably makes your life easier. In contrast to that, recharging all the mobile army annoys you to death, especially when you forget the needed charger. The guys at MIT say that they can change that.
MIT researcher Marin Soljacic from the Department of Physics and Research Laboratory of Electronics thinks he has found a way to recharge mobile devices wirelessly. Wireless energy transfer is nothing new since Faraday was the first to discover it in 1831. The applicability, however, remains very limited since the electro-magnetic energy field cannot be focused in a certain direction nor it can be amplified enough to induce a current sufficient to recharge a high capacity battery.
The technology behind such a device is something like "a power transmitter that would fill the space around it with a non-radiative electromagnetic field," rather than flood al the space with electro-magnetic waves. The field could be fine tuned in order to "access" only certain devices, with the rest of them remaining "immune". The residual radiation would be absorbed back by the emitter itself.
"It certainly was not clear or obvious to us in the beginning how well it could actually work, given the constraints of available materials, extraneous environmental objects, and so on. It was even less clear to us which designs would work best," Soljacic said in an earlier statement.
The future looks promising for such an idea but since no one has built anything even remotely related, there is no information on how such a device will work. But if it does, it will be the end of wires, at least when speaking about power cables.