To do this, the new chip uses what is called torque oscillators, or spin-torque oscillators (STOs). The first ones were created very recently, and are capable of generating microwaves, albeit with a very weak signal. Therefore, some scientists tried to put several on the same chip to obtain more power, but with the problem that they have not been able to determine the best configuration to make it more efficient, with problems around the space between them and a low frequency response. .
Eight STOs connected in series illuminate one LED
However, the researchers seem to have found the clue using eight STO connected serially. With this, they were able to use the 2.4 GHz waves of the WiFi and convert them into signals with direct voltage. By passing them through a condenser, they can make a 1.6 volt LED. Charging the capacitor for 5 seconds allows the LED to offer light for one minute, even after they disconnected the WiFi.
The researchers affirm that what has called them to invent this type of systems is that most of the WiFi waves around us are wasted, and with this at least the energy can be used when it is not being used to offer light or make them work small sensors. This reduces the need to use batteries or batteries in sensors such as thermometers or the like, with capacitors that are much cheaper.
They will add more STO to the system
The team affirms that they will continue to advance in the investigation of this system adding more STO to settings. With this, they could have more energy to illuminate larger LEDs, and even to operate devices that require a little more power. They will also test energy harvesters to charge devices wirelessly, also helping to have a wireless network without interference.
This wireless charging is even more useful, as today’s power system requires a constant source of electrical signals. If the load it is done in a way wireless to a drums, the amount of energy that can be harnessed is greater, as well as making the duration also increase. At the moment it is a prototype, but if it really works that well, it will be a matter of a short time before these systems reach the market, although there is a long way to go before they work, for example with a wireless hard disk.