An anonymous reader quotes a report from New Atlas: For the first time, a team of scientists has now demonstrated the quantum mechanical principle of superabsorption that underpins quantum batteries in a proof-of-concept device. “Superabsorption is a quantum collective effect where transitions between the states of the molecules interfere constructively,” James Quach, corresponding author of the study, told New Atlas. “Constructive interference occurs in all kinds of waves (light, sound, waves on water), and occurs when different waves add up to give a larger effect than either wave on its own. Crucially this allows the combined molecules to absorb light more efficiently than if each molecule were acting individually.” In a quantum battery, this phenomenon would have a very clear benefit. The more energy-storing molecules you have, the more efficiently they’ll be able to absorb that energy — in other words, the bigger you make the battery, the faster it will charge. At least, that’s how it should work in theory. Superabsorption had yet to be demonstrated on a scale large enough to build quantum batteries, but the new study has now managed just that.

To build their test device, the researchers placed an active layer of light-absorbing molecules — a dye known as Lumogen-F Orange — in a microcavity between two mirrors. “The mirrors in this microcavity were made using a standard method to make high quality mirrors,” explained Quach. “This is to use alternating layers of dielectric materials — silicon dioxide and niobium pentoxide — to create what is known as a ‘distributed Bragg reflector.’ This produces mirrors which reflect much more of the light than a typical metal/glass mirror. This is important as we want light to stay inside the cavity as long as possible.” The team then used ultrafast transient-absorption spectroscopy to measure how the dye molecules were storing the energy and how fast the whole device was charging. And sure enough, as the size of the microcavity and the number of molecules increased, the charging time decreased, demonstrating superabsorption at work. “The idea here is a proof-of-principle that enhanced absorption of light is possible in such a device,” Quach told New Atlas. “The key challenge though is to bridge the gap between the proof-of-principle here for a small device, and exploiting the same ideas in larger usable devices. The next steps are to explore how this can be combined with other ways of storing and transferring energy, to provide a device that could be practically useful.”

The research was published in the journal Science Advances.

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Source: Slashdot – Proof of Concept Verifies Physics That Could Enable Quantum Batteries

The number of malware infections targeting Linux devices rose by 35% in 2021, most commonly to recruit IoT devices for DDoS (distributed denial of service) attacks. BleepingComputer reports: A Crowdstrike report looking into the attack data from 2021 summarizes the following:

– In 2021, there was a 35% rise in malware targeting Linux systems compared to 2020.
– XorDDoS, Mirai, and Mozi were the most prevalent families, accounting for 22% of all Linux-targeting malware attacks observed in 2021.
– Mozi, in particular, had explosive growth in its activity, with ten times more samples circulating in the wild the year that passed compared to the previous one.
– XorDDoS also had a notable year-over-year increase of 123%.
[…]
The Crowstrike findings aren’t surprising as they confirm an ongoing trend that emerged in previous years. For example, an Intezer report analyzing 2020 stats found that Linux malware families increased by 40% in 2020 compared to the previous year. In the first six months of 2020, a steep rise of 500% in Golang malware was recorded, showing that malware authors were looking for ways to make their code run on multiple platforms. This programming, and by extension, targeting trend, has already been confirmed in early 2022 cases and is likely to continue unabated.

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Source: Slashdot – Linux Malware Sees 35% Growth During 2021

An anonymous reader quotes a report from Insider: Officials in Beijing are telling people to avoid international mail and to open their packages outdoors and with gloves, saying cases of the Omicron coronavirus variant could have spread through foreign mail. Experts have repeatedly said that there is little risk of getting the coronavirus from mail. There is no indication that this has changed with the Omicron variant, though it is more infectious. But Robin Brant, the BBC’s China correspondent, tweeted on Monday that Beijing was telling residents not to order goods from abroad, and to open packages outside with gloves and a mask on. The South China Morning Post also reported on Monday that Beijing’s center for disease control and prevention said that people should order as little as possible from abroad, and that people should wear gloves and masks when opening any mail from high-risk countries. It comes as the center said the first recorded case of the Omicron variant in Beijing could have entered via mail. Officials in Beijing say the man who was infected was sent mail from Canada on January 7. They claim to have detected the Omicron variant on the letter.

Canada’s post office notes that the risk of the coronavirus spreading via mail is low as it doesn’t live long on surfaces.

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Source: Slashdot – China Claims First Omicron Case Arrived Through Foreign Mail

New submitter Ol Olsoc writes: “When the Mozilla Foundation took to Twitter on New Year’s Eve to announce it was going to begin accepting cryptocurrency donations, it likely didn’t think about potential blowback from one of its founders, but that’s what it got,” reports TechRepublic. “In response, Mozilla has said it’s pausing cryptocurrency donations.” Wikipedia is now discussing whether it should stop accepting Cryptocurrency as well.

Mozilla co-founder Jamie Zawinski has some strong feelings about the matter, [telling TechRepublic]: “Anyone involved in cryptocurrencies in any way is either a grifter or a mark. It is 100% a con. There is no legitimacy.” I cannot disagree with him. Zawinksi tweeted scathing criticism of a Mozilla tweet late last month promoting cryptocurrency donations. They first started accepting bitcoin for donations in 2014.

Here’s where Wikipedia comes in: “Shortly after Zawinski’s tweet and Mozilla’s change of heart, Wikipedia editor GorillaWarfare opened a request for comment on Wikimedia’s meta-wiki calling for the organization to stop accepting cryptocurrency donations, citing Zawinski’s tweet and Mozilla’s reaction,” reports TechRepublic. “Zawinski has read the Wikipedia talk page about the discussion and says he hopes it indicates the beginning of a trend.”

He added: “I’m actually a bit surprised (and pleased) to see that the conversation seemed to be going in an anti-cryptocurrency direction. Good for them.”

Further reading: Wikipedia Faces Pressure to Stop Accepting Crypto Donations on Environmental Grounds (CoinDesk)

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Source: Slashdot – Wikipedia May Be Next To Drop Support For Crypto