Researchers at the university of Barcelona, Spain has developed a novel metamaterials, is expected to improve the efficiency of wireless charging system...

In order to improve the efficiency of wireless charging system, at the University of Barcelona, Spain (University of Barcelona) researchers have developed a novel material.

The current wireless charging the battery by using induction, the way is through a special equipment and connect to the power socket charging base designed special pad. When the equipment from the top of the pad in the pad can be induced current magnetic field is generated, and thus do not need to use any power line, for charging equipment. And when the device away from the pad, it is no longer have enough energy to transfer effectively, also won't for the battery.

Researchers at the university of Barcelona to build system overcame these limitations of wireless charging. The wireless charging system is made from the material, it is a combination of ferroelectric materials (such as iron compounds) and conductive material layer (e.g., copper). This super material covers the transmitter and receiver, let the energy can be passed between two circuits, which can achieve higher power efficiency in the longer distance.

By using this kind of metamaterials, researchers enough to successfully improve the transmission efficiency of 35 times in the laboratory. "In the future, of course, there are a lot of improve space, because in theory, when the experiment conditions and design are ideal, can more significantly improve the charging efficiency." The research director of Alvar Sanchez said.

"Metamaterials shell as the circuit package, can bring the close effect; like the space between them suddenly disappear," the paper's lead author Jordi Prat said.

In addition, such as copper and iron are used to build the metamaterials needed for this wireless charging system, is also very easy to get. Researchers at the start of the experiment aim is to focus on static magnetic fields, it must use a superconductor materials, but this does not apply to everyday use of mobile devices. On the contrary, the low frequency electromagnetic wave, is used to transfer energy between circuits - you just need to general conductor and ferromagnetic.

Barcelona university has applied for patent for this equipment, the researchers said, there are several companies which are interested in using this technology. The study won the autonomous region of Catalonia (Government of Catalonia), the European regional development fund (ERDF) and the Spanish Economy and Competitiveness of (Ministry for pa and Competitiveness) sponsorship.