Scientists have developed a technology to generate energy out of nothing. This month, scientists claimed that their tiny device can be constructed from practically any substance and generate power from the humidity of the air.
Researchers at the University of Massachusetts Amherst say their innovation requires two electrodes and a thin layer of material perforated with holes smaller than 100 nanometers in diameter (that’s thinner than 1/1,000th the breadth of a human hair).
When water molecules go from one chamber to another through the device, they bump up against the edges of the small pores, causing a voltage difference. In essence, it turns the gadget into a battery. According to Molly Glick of Inverse, the whole thing is reminiscent of how clouds generate electricity, which we observe as lightning.
Jun Yao, an electrical engineer at the University of Massachusetts Amherst and co-author of the new research, describes the invention of technology they have built as “like a small-scale, man-made cloud” in an interview with Dan Rosenzweig-Ziff of the Washington Post.
Becky Ferreira of Vice reports that the tiny device, about the size of a fingernail, can only generate continuous electricity at a fraction of a volt thus far. However, the researchers believe it has the potential to one day serve as a reliable, long-term power supply.
According to Yao, quoted in the Washington Post, “the entire Earth is covered with a thick layer of humidity.” It’s a tremendously eco-friendly power plant. That’s only the beginning of how we’ll put it to use.
However, other experts have questioned whether or not the device can be effectively scaled up.
“Hard to know what to make of this,” Donald Sadoway, a materials chemist at MIT who did not participate in the work, told Sabrina Shankman of the Boston Globe. What kind of realistic numbers can be derived is unclear. Investors would naturally be curious in our wattage projections and projected costs.
The amount of water vapour in the atmosphere, or humidity, is very high on Earth. A technology that draws electricity from humidity might theoretically function 24/7, in practically any part of the world. The amount of water vapour the air can retain is directly proportional to its temperature.
Scientists are improving methods of electric technology from humidity
In the past, scientists have attempted to use humidity to generate power, but their methods were either too expensive or only functioned temporarily, as reported by Vice. In the year 2020, Yao and other researchers developed a substance from bacteria that could continuously gather electricity from dampness.
However, the current article demonstrates that this is no longer the case; any material that can be punctured with the ultra-small holes will do, including wood and silicon. With this discovery, the technology becomes considerably more useful; it “turns an initially narrow window into a wide-open door for broad potential,” as Yao explains to Vice.
An independent Rice University scientist named James Tour told the Boston Globe that this discovery is amazing and might have “an enormous impact.”
The next step is for the team to test stacking the technology to see whether that increases the energy output. Although it is unclear whether the generators will become competitive with existing sustainable energy sources like wind and solar, the team envisions them powering electronics in a wide variety of settings, as reported by Inverse.
To read our article about “Pak scientists use AI to measure sweetness of citrus fruits” click here.
