Electricity will be transmitted as wireless Internet

In the smart home of the future, the transmission of wireless energy can be done as easily as wireless internet.

Katie Hall was surprised to see a light bulb shine in the middle of the room without any strings attached. Looking back, she found that it was an experiment. She remembers the picture of the power lines behind a refrigerator.

She stepped back and forth between the coils and the light bulb - the light still on. She said: 'Need to learn this. This is the future. '

Dr. Katie Hall (red shirt on the left) is demonstrating a charging laptop without plugging in a power outlet

Katie Hall is a Ph.D. and now she is the Chief Technology Officer at WiTricity - a start-up company that develops wireless resonance technology .

'But we really don't put electricity into the air. What we are doing is putting the magnetic field into the air , 'she said. Explain like this, WiTricity built a 'source resonator ' - a coil of electricity emitted from the field when there is electricity. If another coil is brought close, there will be an electric charge generated, without any wires.

'When you bring a device into a magnetic field, it creates an electric current in the device, and that way you can transmit electricity,' Dr. Hall explained. Therefore, the light bulb in the experiment has turned on.

You do not have to worry about electric shock risk. Hall ensured that the magnetic fields used to transmit energy were " perfectly safe" - in fact, they were the same as the magnetic fields used in Wi-Fi routers.

And in the home of the future, the transmission of wireless energy can be as easy as wireless internet.

If everything goes exactly like WiTricity's plan, the smartphone will charge right in the user's pocket when they are walking, not plugging in the power outlet, the TV will play without any wiring, and electric cars will refuel while running on the street.

WiTricity demonstrated the ability to charge the laptop, cellphone and TV by attaching resonant coils to the battery. Hall has seen a bright future for families when they are not entangled in wires. ' We will not have to think about it anymore: I will drive home and I never have to go to the gas station, never have to plug in the charger for the car. I can't even imagine how things will change when they live in a wireless environment. '

The house in the future will be completely freed from the wires

Behind these energy-saving applications, Hall also sees revolutions. When Hall first saw the wireless bulb, she immediately thought about medical technology - implanted devices can be charged without touching. Currently, WiTricity is working with a medical company to charge heart devices. Technology has opened the door for any mobile electronic device being ' pinned' to batteries.

'The idea of ​​removing wires will allow us to redesign everything in ways we never thought of, which will help devices and everything we use become effective. more, more practical and even more functional , ' Hall said.

The challenge now is to increase the distance that electricity can be efficiently transmitted. As Hall explains, this distance is related to the size of the coil, and WiTricity wants to complete this transmission distance. So WiTricity is hoping for a new creation: wireless rechargeable AA batteries.

Particularly for Hall, these applications are infinite. That's when people won't have to plug in anything to recharge.