Tech
New non-volatile memory platform built with covalent organic frameworks

Researchers at Institute of Science Tokyo have created a new material platform for non-volatile memories using covalent organic frameworks (COFs), which are crystalline solids with high thermal stability. The researchers successfully installed electric-field-responsive dipolar rotors into COFs.
Due to the unique structure of the COFs, the dipolar rotors can flip in response to an electric field without being hampered by a steric hindrance from the surroundings, and their orientation can be held at ambient temperature for a long time, which are necessary conditions for non-volatile memories. The study is published in the Journal of the American Chemical Society.
Humans have made great efforts to record information by inventing recording media such as clay, paper, compact disks, and semiconductor memories. As the physical entity that holds information—such as indentations, characters, pits, or transistors—becomes smaller and its areal density becomes higher, the information is stored with higher density. In rewritable memories, the class called “non-volatile memories” are suitable for storing data for a long time, such as for days and years.
Recently, molecular technology has evolved. One class of molecular technology consists of molecules that exhibit mechanical motions. They are called “molecular machines” or “nanomachines.” If a mechanical entity rotates or flips around a chemical bond, which serves as an axis, the material class is particularly called “molecular rotors.”
Use of molecular rotors to store information may cause a breakthrough. This is because the size of molecules is a few orders of magnitude smaller than the sizes of pits in a compact disk and transistors in semiconductor memories, and organic molecules are inherently highly designable. Although applications using molecular machines have been explored extensively, the attempts to develop non-volatile memories have been scarce, mainly because the simultaneous satisfaction of the following three requisites has been so challenging.
- To control the orientation of molecular rotors with an electric field, the rotors have to have a dipole—a spatial displacement of a positive charge and a negative charge necessary to gain a force from the applied electric field.
- The rotors must not flip at ambient temperatures so that their orientations are held for a long period.
- There must be adequate spaces around the rotors so that they can flip without being hampered by the steric hindrance that may be caused by the tight packing of the molecules in the solid phase. Additionally, the substance has to be heat durable up to the temperatures current computational components ordinarily undergo, which is often up to 150°C.
New materials developed by the researchers of Institute of Science Tokyo have achieved these three requisites simultaneously, with very high thermal durability up to near 400°C. By demonstrating these novelties for the first time, the researchers have created a material foundation for molecular-machine-based non-volatile memories that potentially store information at higher density than current technologies.
The researchers selected covalent organic frameworks (COFs) as a platform for the aim. COFs are an emerging class of crystalline solids formed by periodically connecting two kinds of building block molecules by covalent bonds. For one building block, they chose a tetrahedral, four-handed molecule. For the other building block, they newly developed a flat, three-handed molecule in which three dipolar rotors (1,2-difluorophenyl, DFP) and three aryl groups are alternately positioned around the central benzene ring.
Previously, these aryl groups were shown to suppress the flip of the DFP rotors at ambient temperatures in a toluene solution, which satisfied requisites 1 and 2 above, but the high density of the molecular solid sterically hindered the flip of the rotors in the solid phase, which could not satisfy requisite 3.
Interestingly, the COFs they developed exhibited an unprecedented shape dimorphism, in which the COFs grew to a hexagonal prism shape or a membrane shape, depending on the solvent composition used for the growth. Furthermore, from X-ray structural analyses, these new COFs turned out to have an unprecedented sln topology, which has a low density inherently and has not been reported for COFs.
“Due to the substantially low density of about 0.2 g/cm3 caused by the unique sln topology possessed by the COFs, the dipole rotors incorporated into the periodic network constituting the COFs have adequate spaces around them, allowing them to flip without suffering from the steric hindrance from their surroundings.
“This is a breakthrough, because our COFs are a rare solid in which dipolar rotors can flip when they are brought to elevated temperatures above 200°C or undergo sufficiently strong electric fields, but their orientations can be held for a long time at ambient temperatures. These uniquenesses have been realized by our careful selection of the building block molecules to create the COFs for this aim,” says Professor Yoichi Murakami, the leader of this project.
Additionally, Murakami pointed out the significance of the work also exists in the extension of the diversity of COFs by their discoveries of sln topology and shape dimorphism, both of which were unknown for COFs previously.
These COF-based solids may be a new platform for storing information with further higher density after proper scale-up and device demonstration are made subsequently.
More information:
Xiaohan Wang et al, sln-Topological Covalent Organic Frameworks with Shape Dimorphism and Dipolar Rotors, Journal of the American Chemical Society (2025). DOI: 10.1021/jacs.5c10010
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Tech
What the US$55 billion Electronic Arts takeover means for video game workers and the industry

Electronic Arts (EA) is one of the world’s largest gaming companies. It has agreed to be acquired for US$55 billion in the second largest buyout in the industry’s history.
Under the terms, Saudi Arabia’s sovereign wealth fund (a state-owned investment fund), along with private equity firms Silver Lake and Affinity Partners, will pay EA shareholders US$210 per share.
EA is known for making popular gaming titles such as Madden NFL, The Sims and Mass Effect. The deal, US$20 billion of which is debt-financed, will take the company private.
The acquisition reinforces consolidation trends across the creative sector, mirroring similar deals in music, film and television. Creative and cultural industries have a “tendency for bigness,” and this is certainly a big deal.
It marks a continuation of large game companies being consumed by even larger players, such as Microsoft’s acquisition of Activision/Blizzard in 2023.
Bad news for workers
There is growing consensus that this acquisition is likely to be bad news for game workers, who have already seen tens of thousands of layoffs in recent years.
This leveraged buyout will result in restructuring at EA-owned studios. It adds massive debt that will need servicing. That will likely mean canceled titles, closed studios and lost jobs.
In their book “Private Equity at Work: When Wall Street Manages Main Street,” researchers Eileen Appelbaum and Rosemary Batt point to the “moral hazard” created when equity partners saddle portfolio companies with debt but carry little direct financial risk themselves.
The Saudi Public Investment Fund (PIF) is looking to increase its holdings in lucrative sectors of the game industry as part of its diversification strategy. However, private equity firms subscribe to a “buy to sell” model, focusing on making significant returns in the short term.
Appelbaum notes that restructuring opportunities are more limited when larger, successful companies—like EA—are acquired. In such cases, she says, “financial engineering is more common,” often resulting in “layoffs or downsizing to increase cash flow and service debt.”
Financial engineering combines techniques from applied mathematics, computer science and economic theory to create new and complex financial tools. The failed risk management of these tools has been implicated in financial scandals and market crashes.
Financialization and the fissured workplace
The financialization of the game industry is a problem. Financialization refers to a set of changes in corporate ownership and governance—including the deregulation of financial markets—that have increased the influence of financial companies and investors.
It has produced economies where a considerable share of profits comes from financial transactions rather than the production and provision of goods and services.
It creates what American management professor David Weil calls a “fissured workplace” where ownership models are multi-layered and complex.
It gives financial players an influential seat at the corporate decision-making table and directs managerial attention toward investment returns while transferring the risks of failure to the portfolio company.
As a result, game titles, jobs and studios can be easily shed when financial companies restructure to increase dividends, leaving workers with little access to these financial players as accountable employers.
Chasing incentives and cutting costs
The Saudi PIF has stated a goal of creating 1.8 million “direct and indirect jobs” to stimulate the Saudi economy. But capital is mobile, and game companies will likely follow jurisdictions that have lower wages, fewer labor protections and significant tax incentives.
Some Canadian governments are working to keep studios and creative jobs closer to home. British Columbia recently increased its interactive media tax credit to 25%.
The move was welcomed by the chief operations officer of EA Vancouver, who said “B.C.”s continued commitment to the interactive digital media sector…through enhancements to the … tax credit … reflects the province’s recognition of the industry’s value and enables companies like ours to continue contributing to B.C.”s creative and innovative economy.”
This may buffer Vancouver’s flagship EA Sports studio, but those making less lucrative games or in regions without financial subsidies will be more at risk of closure, relocation or sale. Alberta-based Bioware—developer of games including Dragon Age and Mass Effect—could be at risk.
Other ways of aggressively cutting costs might come in the form of increased AI use. EA was called out in 2023 for saying AI regulation could negatively impact its business. Yet creative stagnation and cutting corners through AI will negatively impact the number of jobs, the quality of jobs and the quality of games. That could be a larger threat to EA’s business and reinforce a negative direction for the industry.
Game players have low tolerance for quality shifts and predatory monetization strategies. Research shows that gamers see acquisitions negatively: development takes longer, innovation is curtailed and creativity is stymied.
Consolidation among industry giants may cause players to lose faith in EA’s product—and games in general, given the many other entertainment options that are available.
Creative control and worker power at risk
Some have raised concerns that the acquisition could affect EA’s creative direction and editorial decisions, potentially leading to increased content restrictions.
While it’s still unclear how the deal will influence EA’s output, experiences in other industries might be a sign of things to come. For instance, comedians reportedly censored themselves to perform in Saudi Arabia.
The acquisition may also have a chilling effect on the workers’ unionization movement. Currently, no EA studios in Canada are unionized. Outsourced quality assurance workers at the EA-owned BioWare Studio in Edmonton successfully certified a union in 2022, but were subsequently laid off. Fears of outsourcing, layoffs and restructuring could discourage future organizing efforts.
On the other hand, the knowledge that large financial players are making massive profits could galvanize workers, especially considering that before the buyout, EA CEO Andrew Wilson was paid about 264 times the salary of the median EA employee.
The deal certainly does nothing to bring stability to an already volatile industry. Regardless of any cash injection, EA remains very exposed.
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What the US$55 billion Electronic Arts takeover means for video game workers and the industry (2025, October 21)
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Tech
An Amazon outage has rattled the internet. A computer scientist explains why the ‘cloud’ needs to change

The world’s largest cloud computing platform, Amazon Web Services (AWS), has experienced a major outage that has impacted thousands of organizations, including banks, financial software platforms such as Xero, and social media platforms such as Snapchat.
The outage began at roughly 6pm AEDT on Monday. It was caused by a malfunction at one of AWS’ data centers located in Northern Virginia in the United States. AWS says it has fixed the underlying issue but some internet users are still reporting service disruptions.
This incident highlights the vulnerabilities of relying so much on cloud computing—or “the cloud” as it’s often called. But there are ways to mitigate some of the risks.
Renting IT infrastructure
Cloud computing is the on-demand delivery of diverse IT resources such as computing power, database storage, and applications over the internet. In simple terms, it’s renting (not owning) your own IT infrastructure.
Cloud computing came into prevalence with the dot com boom in the late 1990s, wherein digital tech companies started to deliver software over the internet. As companies such as Amazon matured in their own ability to offer what’s known as “software as a service” over the web, they started to offer others the ability to rent their virtual servers for a cost as well.
This was a lucrative value proposition. Cloud computing enables a pay-as-you-go model similar to a utility bill, rather than the huge upfront investment required to purchase, operate and manage your own data center.
As a result, the latest statistics suggest more than 94% of all enterprises use cloud-based services in some form.
A market dominated by three companies
The global cloud market is dominated by three companies. AWS holds the largest share (roughly 30%). It’s followed by Microsoft Azure (about 20%) and Google Cloud Platform (about 13%).
All three service providers have had recent outages, significantly impacting digital service platforms. For example, in 2024, an issue with third-party software severely impacted Microsoft Azure, causing extensive operational failures for businesses globally.
Google Cloud Platform also experienced a major outage this year due to an internal misconfiguration.
Profound risks
The heavy reliance of the global internet on just a few major providers—AWS, Azure, and Google Cloud—creates profound risks for both businesses and everyday users.
First, this concentration forms a single point of failure. As seen in the latest AWS event, a simple configuration error in one central system can trigger a domino effect that instantly paralyzes vast segments of the internet.
Second, these providers often impose vendor lock-in. Companies find it prohibitively difficult and expensive to switch platforms due to complex data architectures and excessively high fees charged for moving large volumes of data out of the cloud (data egress costs). This effectively traps customers, leaving them hostage to a single vendor’s terms.
Finally, the dominance of US-based cloud service providers introduces geopolitical and regulatory risks. Data stored in these massive systems is subject to US laws and government demands, which can complicate compliance with international data sovereignty regulations such as Australia’s Privacy Act.
Furthermore, these companies hold the power to censor or restrict access to services, giving them control over how firms operate.
The current best practice to mitigate these risks is to adopt a multi-cloud approach that enables you to decentralize. This involves running critical applications across multiple vendors to eliminate the single point of failure.
This approach can be complemented by what’s known as “edge computing“, wherein data storage and processing is moved away from large, central data centers, toward smaller, distributed nodes (such as local servers) that firms can control directly.
The combination of edge computing and a multi-cloud approach enhances resilience, improves speed, and helps companies meet strict data regulatory requirements while avoiding dependence on any single entity.
As the old saying goes, don’t put all of your eggs in one basket.
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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An Amazon outage has rattled the internet. A computer scientist explains why the ‘cloud’ needs to change (2025, October 21)
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Tech
Sperm From Older Men Have More Genetic Mutations

Human semen not only accumulates genetic mutations with age; as the percentage of sperm carrying potentially serious mutations increases, so does the risk of developing diseases in offspring.
This is according to a new study by researchers at the Sanger Institute and King’s College London. The team sequenced semen samples from individuals between the ages of 24 and 75, using very high-precision technologies, and found that the male germ line (the line of cells that produce sperm) is subject to a combination of mutation and positive selection.
The scientists used a duplex sequencing technique called NanoSeq, which can detect rare mutations with a very low margin of error. This allowed them to analyze 81 sperm samples from 57 donors. The results showed that a man’s sperm adds an average of 1.67 new mutations every year.
But the most striking aspect of the study is not limited to the mere accumulation of mutations with age. The authors discovered that the male germ line is subject to positive selection. That is, certain mutations offer an advantage to cells that produce sperm and expand. They identified that many of these mutations are in genes related to developmental disorders or a predisposition to childhood cancer.
“We expected to find evidence that selection influences mutations in sperm,” said Matthew Neville, coauthor of the study published this month in the journal Nature. “What surprised us was how much the number of sperm carrying mutations associated with serious diseases increases.”
What Does This Mean for Children of Older Fathers?
The researchers estimated that about 3 to 5 percent of sperm from middle-aged and older men carry some potentially pathogenic mutation in the exome (the coding part of the genome). That represents a higher risk than previous estimates. In more concrete numbers, the estimated fraction for men in their thirties was close to 2 percent, while it reached about 4.5 percent for men in their seventies.
From the evolutionary and clinical perspective, the implications are significant. Evolutionarily, it shows that the male germ line is not simply a “machine” that accumulates errors: There is a dynamic process of mutation and selection that can modify the genetic “quality” of the sperm with the age of the father.
On the clinical side, however, it raises questions about reproductive planning, genetic counseling, and the additional risks associated with an older father. The authors argue that although the percentages remain modest, the the accumulation is not only linear but also has a selection component that favors mutations with the potential to spread.
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