Innovation provides electricity across the air to any phone without the need for plugs and cables

Scientists have developed a wireless charging room that can connect energy across the air to any laptop, tablet or phone without the need for plugs or cables.

The new technology includes generating magnetic fields at longer distances without producing electrical fields that would be harmful to any person or animal inside the room, according to a team from the University of Tokyo.

The authors of the study indicated that the system can provide up to 50 watts of energy without exceeding the current guidelines for human exposure to magnetic fields.

It can be used to charge any device with a wire file installed inside, similar to the system used with the currently used wireless charging platforms - but without the plate.

In addition to removing the charging cable packages from the offices, the team says it can allow more devices to be fully automated without the need for ports, plugs or cables.

The team said that the current system includes a column in the middle of the room to allow magnetic fields to reach every corner, but it will work without it, and the middle solution is "dead points" where wireless charging cannot be.

Researchers did not mention the cost that technology might require, as it is under development.When available, it can be modified for an existing building or merged into a completely new building, with or without a central conductor column.

Other uses include a smaller version to run tools inside a box, or a larger version that can allow the entire factory to work without cables.

"This really increases the power of the computer world everywhere - you can put a computer in anything without the need to worry about charging or delivery," said the co -author of the study of human Sambel, of the University of Michigan.

There are also clinical applications, according to Sambel, who said that the hearts of the heart currently require a wire of the pump to pass through the body and in the cavity.

He said, "This can eliminate that," adding that it will reduce the risk of infection by removing the wire completely, "reducing the risk of infection and improving the quality of patients' life."

To prove the new system, they installed the unique infrastructure for wireless charging in a "test room" made of aluminum with an area of 10 at 10 feet.

Then they used it to operate the lamps, fans and mobile phones that attract the current from anywhere in the room, regardless of where the furniture or people are placed.

The researchers said that the system is a great improvement compared to previous attempts to wireless charging, which used the harmful microwave radiation or the required devices to be placed on custom shipping platforms.

Instead, it is used as a surface connected to the walls of the room and an electrode to generate magnetic fields, the devices can benefit from when you need energy.

The devices harness the magnetic field with wire files, which can be combined into electronics such as mobile phones.

The researchers say that the system can easily be expanded to include larger structures such as factories or warehouses, while continuing to meet the current safety guidelines for electromagnetic fields, set by the American Federal Communications Committee (FCC).

"Something like this will be easier to implement in the new construction, but I believe that modernization modifications will be possible as well. And some commercial buildings, for example, have already have metal support columns, and they should beTo be available to spray the surface of the conductor on the walls. "

Samble said that the key to making the system works is building a resonant structure that can provide a magnetic field of the size of the room while restricting harmful electric fields, which can heat biological tissues.

The team solution used devices called condensed capacitors, which work on the combined capacity model - where thermal systems are reduced to separate blocks.

The temperature difference within each mass is almost mentioned, and is already used widely in climate control systems for buildings.

When placed in the wall cavities, the capacitors generate a magnetic field that resonates across the room, while the electric fields are locked in the same condensate.

This overcomes the restrictions of previous wireless energy systems, which are limited to either providing large amounts of energy at a small distance of a few millimeters, or very small amounts of energy across long distances that harm human beings.

The team also had to design a way to ensure that the magnetic fields reached each corner of the room, and to eliminate any "dead points" as shipping may not work.

Magnetic fields tend to move in circular patterns, which leads to the creation of dead points in a square room, which makes it difficult to accurately consist with wired files in the device.

"The pulling force on the air using a file is very similar to hunting butterflies with a network," Sambel said, adding that the trick is that you have the largest possible number of butterflies revolve around the room in the most directions.

And through the presence of multiple butterflies, or in this case several magnetic fields interact, it does not matter the location of the network, or the way it is directed - you will reach the target.

To achieve this, the system generates two separate three -dimensional magnetic fields.

One of them moves in a circle around the central pole of the room, while the other revolves around the corners, and moves between the adjacent walls.

This approach removes the dead points, enabling the devices to extract energy from anywhere in space, according to Sambel.

Tests using anatomical dolls showed that the system can connect at least 50 watts of energy to anywhere in the room without exceeding the guidelines of the Federal Communications Committee (FCC) for electromagnetic energy.

The researchers noted that the implementation of the system in commercial or residential environments is likely to take years.

They are currently working on testing the system in a building on the campus of the University of Michigan to see if it can be modified to suit a building currently.

The results were published in Nature Electronics.