Saturday , February 27 2021

Is it the end of the batteries? Scientists discover how to convert WiFi signals into electricity



A group of Massachusetts Institute of Technology (MIT) have developed a device capable of converting WiFi signals into electricity, which can be used to power electronic devices without having to leave them charging at night.

According to what is reported by the Daily Mail, this is a small two-dimensional article with very thin and flexible materials, which They absorb WiFi waves, as well as other electromagnetic waves present in the air, and convert them into DC voltage through a semiconductor.

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According to Tomás Palacios, professor of electrical and computer engineering at MIT, this discovery opens the way to collect energy stolen from the environment.

"When you have one of these devices, you are collecting energy 24 hours a day, 7 days a week (…) you could cover the table with an electronic tablecloth and even if it was just at the table, you would collect energy all the time, "he told Nature.

Although the power the device does not exceed the micro watt range, this invention brings the possibility of getting electricity from almost anywhere, which can be used as a charge for cell phones, laptops, among other equipment.

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In laboratory tests, the developed system has an efficiency between 30% and 40%, producing around 40 microwatts when exposed to signals carrying 150 microwatts of power.

"Does not look like much compared to the 60 watts a computer needs, but you can still do a lot with that, "says Palacios, who points out that" you can design a wide range of sensors for environmental monitoring or chemical and biological detection, operating on a single microwatt. O you can save electricity on a battery to use it later"


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