Researchers are rejoicing over their newly-developed contraption that can generate clean electricity “from thin air”.
Scientists at the University of Massachusetts Amherst have designed a device that uses a natural protein to create electricity from moisture in the air: a new technology they say could have significant implications for the future of renewable energy, climate change and in the future of medicine.
As reported this week in Nature, the laboratories of electrical engineer Jun Yao and microbiologist Derek Lovley at UMass Amherst have created a device they call an “Air-gen” or air-powered generator, with electrically conductive protein nanowires produced by the microbe Geobacter.
The Air-gen connects electrodes to the protein nanowires in such a way that electrical current is generated from the water vapor naturally present in the atmosphere.
“We are literally making electricity out of thin air,” says Yao. “The Air-gen generates clean energy 24/7.”
Lovely, who has advanced sustainable biology-based electronic materials over three decades, adds, “It’s the most amazing and exciting application of protein nanowires yet.”
The new technology developed in Yao’s lab is non-polluting, renewable and low-cost. It can generate power even in areas with extremely low humidity such as the Sahara Desert. It has significant advantages over other forms of renewable energy including solar and wind, Lovley says, because unlike these other renewable energy sources, the Air-gen does not require sunlight or wind, and “it even works indoors.”
Graphic image of a thin film of protein nanowires generating electricity from atmospheric humidity. Photo by UMass Amherst/Yao and Lovley labs.
The Air-gen device requires only a thin film of protein nanowires less than 10 microns thick, the researchers explain. The bottom of the film rests on an electrode, while a smaller electrode that covers only part of the nanowire film sits on top. The film adsorbs water vapor from the atmosphere.
A combination of the electrical conductivity and surface chemistry of the protein nanowires, coupled with the fine pores between the nanowires within the film, then establishes the conditions that generate an electrical current between the two electrodes.
The researchers say that the current generation of Air-gen devices are able to power small electronics, and they expect to bring the invention to commercial scale soon.
The current Air-gen device can power small devices. Photo by UMass Amherst/Yao and Lovley labs.
Next, the scientists plan to continue their research by developing a small Air-gen “patch” that can power electronic wearables such as health and fitness monitors and smart watches, which would eliminate the requirement for traditional batteries.
They also hope to develop Air-gens to apply to cell phones to eliminate periodic charging.
Yao says: “The ultimate goal is to make large-scale systems. For example, the technology might be incorporated into wall paint that could help power your home. Or, we may develop stand-alone air-powered generators that supply electricity off the grid.
“Once we get to an industrial scale for wire production, I fully expect that we can make large systems that will make a major contribution to sustainable energy production.”
In addition to the Air-gen, Yao’s laboratory has developed several other applications with the protein nanowires. “This is just the beginning of new era of protein-based electronic devices,” he said.
MONTREAL – Lightspeed Commerce Inc. says it is conducting a review of its business and operations including talks relating to a range of potential strategic alternatives.
The Montreal-based payments technology company made the comments after reports concerning a potential transaction involving the company.
Lightspeed says it periodically undertakes a review of its business and operations with a view of realizing its full potential.
A strategic review is often seen by investors as a prelude to a sale by a company.
Lightspeed says its board of directors is committed to acting in the best interests of the company and its stakeholders.
Company founder Dax Dasilva returned to the role of chief executive officer earlier this year and has been working to return the company to profitability.
This report by The Canadian Press was first published Sept. 26, 2024.
OTTAWA – Bank of Canada governor Tiff Macklem says there is a lot of uncertainty around how artificial intelligence could affect the economy moving forward, including the labour market and price growth.
In a speech in Toronto at the Economics of Artificial Intelligence Conference, the governor said Friday that the central bank is approaching the issue cautiously to get a better understanding of how AI could affect its job of keeping inflation low and stable.
“Be wary of anyone who claims to know where AI will take us. There is too much uncertainty to be confident,” Macklem said in prepared remarks.
“We don’t know how quickly AI will continue to advance. And we don’t know the timing and extent of its economic and social impacts.”
The governor said AI has the potential of increasing labour productivity, which would raise living standards and grow the economy without boosting inflation.
In the short-term, he said investment in AI is adding to demand and could be inflationary.
However, Macklem also highlighted more pessimistic scenarios, where AI could destroy more jobs than it creates or lead to less competition rather than more.
The governor called on academics and businesses to work together to shed more light on the potential effects of AI on the economy.
“When you enter a dark room, you don’t go charging in. You cautiously feel your way around. And you try to find the light switch. That is what we are doing. What we central bankers need is more light,” he said.
This report by The Canadian Press was first published Sept. 20, 2024.
CHICAGO (AP) — United Airlines has struck a deal with Elon Musk’s SpaceX to offer satellite-based Starlink WiFi service on flights within the next several years.
The airline said Friday the service will be free to passengers.
United said it will begin testing the service early next year and begin offering it on some flights by later in 2025.
Financial details of the deal were not disclosed.
The announcement comes as airlines rush to offer more amenities as a way to stand out when passengers pick a carrier for a trip. United’s goal is to make sitting on a plane pretty much like being on the ground when it comes to browsing the internet, streaming entertainment and playing games.
“Everything you can do on the ground, you’ll soon be able to do on board a United plane at 35,000 feet, just about anywhere in the world,” CEO Scott Kirby said in announcing the deal.
The airline says Starlink will allow passengers to get internet access even over oceans and polar regions where traditional cell or Wi-Fi signals may be weak or missing.
