An anonymous reader quotes a report from Engadget: Johns Hopkins University-led researchers have developed a new technique that let a partially paralyzed man feed himself using robotic arms connected through a brain-machine interface. He only had to make small movements with his fists at certain prompts (such as "select cut location") to have the fork- and knife-equipped arms cut food and bring it to his mouth. He could have dessert within 90 seconds, according to the researchers. The new method centers on a shared control system that minimizes the amount of mental input required to complete a task. He could map his four-degree freedom of movement (two for each hand) to as many as 12 degrees of freedom for controlling the robot arms. The limbs' prompt-based intelligent responses also reduced the workload. The researchers "want to add touch-like sensor feedback instead of relying exclusively on visuals," the report says. "They also hope to improve the accuracy and efficiency while reducing the need for visual confirmation."

An anonymous reader quotes a report from The Drive: AMcMurtry Speirling piloted by former F1 and IndyCar racing driver Max Chilton broke the Goodwood hill record Sunday, crushing the previous record set by the VW ID.R by nearly a full second. The electric fan car rocketed -- almost literally -- up the hill in a staggering 39.08 seconds, compared to the electric prototype's 39.90. The Speirling is the creation of a British-Irish startup that set out to build a ridiculously powerful and lightweight car that could be driven on the track and on the streets (a road-legal version of the Goodwood fan car is in the works). The batmobile-looking machine reportedly weighs less than 1,000 kilograms (less than 2,200 pounds), yet boasts over 1,000 horsepower courtesy of its dual electric motors. While boasting a power-to-weight ratio of 1,000 bhp per ton surely played a role at the Goodwood Festival of Speed over the weekend, it's the car's twin fans hidden within the bespoke chassis that really helped it achieve that record-setting time. Much like Gordon Murray's T.50 supercar, the Speirling's fans essentially suck the car to the ground and provide it with other-worldly downforce. Factor in the massive rear wing and other external bodywork, and the EV is essentially glued to the road while cornering at high speed. You can watch video of the impressive feat here.

"Tesla has launched a new virtual power plant in partnership with PG&E in California that will pay Powerwalls owners to help stabilize the electric grid and end brownouts in California," reports Electrek. A virtual power plant (VPP) consists of distributed energy storage systems, like Tesla Powerwalls, used in concert to provide grid services and avoid the use of polluting and expensive peaker power plants.
PC Magazine notes the program was launched in conjunction with California power utility Pacific Gas and Electric Company: As well as the personal feeling of satisfaction for helping to stabilize California's grid, you'll receive $2 for every additional kilowatt-hour delivered during designated "events," such as any time grid operator CAISO issues an energy alert, warning, or emergency. Contributors will receive push notifications before and during an event with details of its expected start and finish times. Once an event is over, each Powerwall will automatically resume normal operation.
Electrek adds that "The $2 per kWh amount is quite significant and reflects just how much value a Virtual Power Plant can add to the grid in case of an emergency event where the grid needs more capacity. Depending on the events and the number of Powerwalls homeowners have, they could earn anywhere from $10 to $60 per event or even more for bigger systems."

But in addition, "Tesla will dispatch your Powerwall when the grid is in critical need of additional power. That is when the least efficient generators would typically come online."

And you get the distinction of being pat of "the largest distributed battery in the world — potentially over 50,000 Powerwalls.... Tesla said that it has about 50,000 Powerwalls that could be eligible for this VPP, which add up to a significant 500 MWh of energy capacity than can be distributed in any event... [I]t is basically going to turn the company into a major decentralized electric utility. It's already in operation in Australia. Now it's in California, and soon it is going to be in Texas."

The Guardian reports on the "world's first production-ready solar car", a streamlined and energy-efficient sedan-style vehicle covered with curved solar panels called "the Lightyear 0."

The Dutch company Lightyear hopes to be shipping the vehicle by November, priced at about $264,000 (€250,000 or £215,000) — though the company plans another solar-assisted car priced at $32,000 (€30,000) as early as 2025.

Lead engineer Roel Grooten credits their car's efficiency to things like the "low-rolling resistance of the tyres, of the bearing s and the motor." It is this streamlined design that the company credits for allowing it to muscle its way into a space long overlooked by most car manufacturers...."If we would have the same amount of energy that we harvest on these panels on any other car that uses three times the amount of energy to drive, it becomes useless. It becomes a very expensive gimmick," said Grooten. "You have to build this car from the ground up, to make it as efficient as possible, to make it this feasible."

In optimal conditions, the solar panels can add up to 44 miles a day to the 388-mile range the car gets between charges, according to the company. Tests carried out by Lightyear suggest people with a daily commute of less than 22 miles could drive for two months in the Netherlands without needing to plug in, while those in sunnier climes such as Portugal or Spain could go as long as seven months....

In an effort to use as much of this solar energy as possible, the windswept design eschews side-view mirrors for cameras and runs off lightweight electric motors tucked into its wheels. The body panels are crafted from reclaimed carbon fibre and the interiors are fashioned from vegan, plant-based leather with fabrics made from recycled polyethylene terephthalate bottles.
The article notes that Mercedes-Benz also plans rooftop solar panels for an upcoming electric car, while Toyota's Prius hybrids also sometimes offer limited-capacity panels as add-ons. Other companies planning solar-assisted vehicles include Sono Motors and Aptera Motors.

An anonymous reader quotes a report from Interesting Engineering: Seattle-based Zap Energy is using a lesser-known approach to nuclear fusion to build modular, garage-sized reactors. They are cheaper and don't require the large, incredibly powerful magnets used in traditional fusion experiments. Ultimately, they may also provide a quicker route to achieving commercially viable nuclear fusion, a press statement reveals.

Nuclear fusion has the potential to remove our reliance on fossil fuels by providing a practically limitless energy source that produces power in a similar way to the Sun and the stars. Fusion experiments, such as Europe's ITER, typically rely on large donut-shaped tokamak reactors using extremely powerful magnets to control the plasma generated during the fusion reaction. Zap Energy has developed a different approach with its Z-pinch technology. The company uses an electromagnetic field instead of the expensive magnetic coils and shielding materials used in tokamaks. This, they say, pins the plasma inside a relatively small space and "pinches" it until it becomes hot and dense enough for the required reaction to take place.

Z-pinch technology was first thought up in the 1950s, but until recently, instability problems meant that research had been largely focused on the more stable tokamak technology. In 2019, a group of researchers from the University of Washington proposed the use of sheared axial flow to smooth the plasma streams, preventing distortions that previously led to instability. One of the authors of that study, Uri Shumlak, co-founded Zap Energy in 2017 in a bid to leverage the sheared axial flow technique to make Z-pinch technology commercially viable. Just last week, Zap Energy reached a key milestone by creating the first plasmas inside its prototype reactor, called the FuZE-Q. The Zap Energy team also just closed a $160-million Series C funding round, which will help it to further develop its Z-pinch technology and hopefully bring it to the market. The company says its reactors could be small enough to fit inside a garage, meaning it could give both micro nuclear reactor and nuclear fusion firms a run for their money.

Apple is "likely" to announce its long-rumored mixed-reality headset as soon as January 2023, Apple analyst Ming-Chi Kuo has reiterated. MacRumors reports: In a detailed post on Medium, Kuo explained that Apple's headset will be a "game-changer" for the augmented-reality and virtual-reality market. Describing some of the headset's functionality, Kuo said that while Apple has repeatedly touted its focus on AR, the headset will "offer an excellent immersive experience" and a "video see-thru" mode. The headset is expected to boost demand for immersive gaming and multimedia entertainment experiences.

Kuo said that the device is "the most complicated product Apple has ever designed," leading Apple to use components from many of its existing suppliers. Kuo also believes that Apple will be an industry leader in the headset space, has "significant competitive advantages," and does not need to join the Metaverse Standards Forum. Notably, Kuo thinks that rivals will race to imitate Apple's headset once it launches, "leading the headset hardware industry to the next stage of rapid growth."

The Dutch joined Germany and Austria in reverting to coal power on Monday following an energy crisis provoked by Russia's invasion of Ukraine. France 24 reports: The Netherlands said it would lift all restrictions on power stations fired by the fossil fuel, which were previously limited to just over a third of output. Berlin and Vienna made similar announcements on Sunday as Moscow, facing biting sanctions over Ukraine, cuts gas supplies to energy-starved Europe. "The cabinet has decided to immediately withdraw the restriction on production for coal-fired power stations from 2002 to 2024," Dutch climate and energy minister Rob Jetten told journalists in The Hague. The Dutch minister said his country had "prepared this decision with our European colleagues over the past few days."

Germany however said it still aimed to close its coal power plants by 2030, in light of the greater emissions of climate-changing CO2 from the fossil fuel. "The 2030 coal exit date is not in doubt at all," economy ministry spokesman Stephan Gabriel Haufe said at a regular news conference. The target was "more important than ever," he added.

Austria's government meanwhile announced Sunday that it would reopen a mothballed coal power station because of power shortages arising from reduced deliveries of gas from Russia. The authorities would work with the Verbund group, the country's main electricity supplier, to get the station in the southern city of Mellach back in action, said the Chancellery. The European Commission noted Monday that "some of the existing coal capacities might be used longer than initially expected" because of the new energy landscape in Europe.

Scientists have designed a tiny robot-fish that is programmed to remove microplastics from seas and oceans by swimming around and adsorbing them on its soft, flexible, self-healing body. From a report: Microplastics are the billions of tiny plastic particles which fragment from the bigger plastic things used every day such as water bottles, car tyres and synthetic T-shirts. They are one of the 21st century's biggest environmental problems because once they are dispersed into the environment through the breakdown of larger plastics they are very hard to get rid of, making their way into drinking water, produce, and food, harming the environment and animal and human health.

"It is of great significance to develop a robot to accurately collect and sample detrimental microplastic pollutants from the aquatic environment," said Yuyan Wang, a researcher at the Polymer Research Institute of Sichuan University and one of the lead authors on the study. Her team's novel invention is described in a research paper in the journal Nano Letters. "To the best of our knowledge, this is the first example of such soft robots." Researchers at Sichuan University have revealed an innovative solution to track down these pollutants when it comes to water contamination: designing a tiny self-propelled robo-fish that can swim around, latch on to free-floating microplastics, and fix itself if it gets cut or damaged while on its expedition.

NASA announced on Tuesday that it's contracting three suppliers to provide concept designs for nuclear fission energy systems designed for use on the moon. TechCrunch reports: The winning bids for this award came from Lockheed Martin, Westinghouse and IX (a joint venture from Intuitive Machines and X-Energy). Each will be working with a few partners to develop their systems, which will be "initial concepts" only for the purposes of satisfying this particular contract, and each will receive roughly $5 million for their work, expected to take around 12 months.

NASA is aptly partnering with the Department of Energy (DOE) on this project, and the specs include a 40-kilowatt power generation capability, capable of generating that for at least a decade. That's about what a full charge on a current entry-level Nissan Leaf contains -- but as a fission generator it would obviously provide that continuously. It may not seem like much, but deployed singularly or in groups to support a lunar base, it could solve a lot of the challenges of the kind of prolonged occupancy of the moon that NASA plans to eventually establish through its Artemis program, which seeks to return humans to our largest natural satellite for ongoing science missions. NASA also notes that the work done for this contract could have other future applications for propulsion systems for long-range spacecraft for deep space explorations.

The Israeli Ministry of Defense plans to begin testing of a Medium Robotic Combat Vehicle (M-RCV) next year. New Atlas reports: Developed by the Ministry of Defense's Directorate of Defense Research and Development (DDR&D), the Tank and APC Directorate, and Israeli security industries, the robotic tank is based on a new robotic platform type BLR-2 made by Israeli firm BL. It features a 30-mm autonomous turret originally developed by the Tank and APC Directorate for the Eitan armored personnel carrier; the Elbit Iron Fist Active Protection System, which is a smaller, mountable version of the Iron Dome anti-projectile defense system; fire control and mission management systems; a robotic autonomous operations kit; and active and passive sensors for situational awareness.

In addition, the robotic vehicle carries a capsuled drone that it can deploy and retrieve for forward reconnaissance missions. It can also carry a variety of heavy loads, as well as an Israeli Aerospace Industries missile launcher and Rafael Advanced Defense Systems Spike missiles. According to Elbit, the robot can operate in all weathers in a largely autonomous mode and can integrate with uncrewed battlefield arrays. Field tests in representative scenarios are scheduled to start in 2023. You can view the M-RCV in action here.

Taiwanese research firm TrendForce said Monday that DRAM pricing for commercial buyers is forecast to drop around three to eight percent across those markets in the third quarter compared to the previous three months. Even prices for DDR5 modules in the PC market could drop as much as five percent from July to September. The Register reports: This could result in DRAM buyers, such as system vendors and distributors, reducing prices for end users if they hope to stimulate demand in markets like PC and smartphones where sales have waned. We suppose they could try to profit on the decreased memory prices, but with many people tightening their budgets, we hope this won't be the case. The culprit for the DRAM price drop is one that we've been hearing a great deal about in the past few months: weaker demand for consumer electronics, including PCs and smartphones, as a result of high inflation and Russia's ongoing invasion of Ukraine, according to TrendForce.

The weaker consumer demand means DRAM inventories are building up at system vendors and distributors, which means they don't need to buy as much in the near future. This, in turn, is why memory prices are dropping, the research firm said. On the PC side, DDR4 memory pricing is expected to drop three to eight percent in the third quarter of 2022 after only seeing a zero to five percent decline in the second quarter. DDR5 pricing, on the other hand, is set to drop by only zero to five percent in Q3 after seeing a three to eight percent plummet in the previous quarter. For certain DRAM products, prices could see a steeper decline of more than eight percent, according to TrendForce, though the firm didn't say which products this would include. TrendForce said PC makers are focused on getting rid of their existing DRAM inventories, and a continuously "sluggish" market means they'll be reticent to buy much more memory.

An anonymous reader quotes a report from the Indian Express: The US should do more to attract overseas chipmakers to build plants on its territory as a matter of national security, former Google chief Eric Schmidt wrote in an opinion piece published Monday. Pointing to China's accelerating investment in chip fabrication technology and capacity, Schmidt urged the US to reduce its dependence on Taiwan and South Korea for the most advanced semiconductors powering everything from smartphones to ballistic missiles and build out its own capabilities. Instead, it should be incentivizing national champions Taiwan Semiconductor Manufacturing Co. and Samsung Electronics Co. to partner with US chip designers and build more on US soil, he said.

International relations scholar Graham Allison, who shares the byline on the Wall Street Journal article with Schmidt, previously warned that the US and China could be on a path to war that neither country wants. The two men set out policy recommendations for improving American competitiveness in the chipmaking race so as to avoid a drastic imbalance between the two superpowers. "If Beijing develops durable advantages across the semiconductor supply chain, it would generate breakthroughs in foundational technologies that the U.S. cannot match," they wrote. "The U.S. can't spend its way out of this predicament."

In addition to President Joe Biden's proposed $52 billion investment plan -- which is still under consideration by US legislators -- the US should lean into its strengths of research and development, manufacturing less-advanced but more widely used slower chips through the likes of Intel Corp. and GlobalFoundries Inc., and redouble its efforts to bring TSMC and Samsung on shore. Both Asian companies are constructing fabs in the US, but Schmidt and Allison's message is that more needs to be done to ensure long-term US prosperity. "America is on the verge of losing the chip competition," they said, urging that "the U.S. government mobilizes a national effort similar to the one that created the technologies that won World War II."

A $14.95 smart lamp from Ikea apparently has enough computing power to run the classic PC game Doom. From a report: A software engineer named Nicola Wrachien removed the smart lamp's computer chip and used it to build a miniaturized Doom gaming system. Over the weekend, he uploaded a video to YouTube, showing his creation in action. The system runs a downsized version of Doom that requires less RAM. The chip from the Ikea lamp has enough processing power to play the game at 35 frames per second over a cheap 160-by-128-pixel display. Wrachien, who is from Hungary, embarked on the project after reading headlines about Doom purportedly running on a pregnancy test. In reality, the pregnancy test was only able to run the game due to an added OLED display and streaming it from a PC.

"Practical nuclear fusion is, famously, always 10 years in the future," reports IEEE Spectrum. "Except that the Pentagon recently gave an award to a tiny startup to launch a fusion power system into space in just five..." Avalanche Energy Designs, based near a Boeing facility in Seattle...is working on modular "micro fusion packs," small enough to hold in your hand yet capable of powering everything from electric cars to spaceships. Last month, the Pentagon's Defense Innovation Unit (DIU) announced it had awarded Avalanche an unspecified sum to develop its Orbitron fusion device to generate either heat or electricity, with the aim of powering a high-efficiency propulsion system aboard a prototype satellite in 2027....

Avalanche's Orbitron... could theoretically fit on a tabletop. It relies on the Ph.D. thesis of Tom McGuire, a student working on inertial electrostatic confinement (IEC) fusion at MIT in 2007... McGuire's IEC work languished until it caught the attention of two engineers working at Blue Origin: Robin Langtry and Brian Riordan. In 2018, they formed Avalanche Energy as a side hustle, eventually leaving Blue Origin in the summer of 2021. In March of this year Avalanche emerged from stealth with $5 million in venture-capital funding and a staff of 10, although Avalanche's official address is still a single-family home in Seattle.

Avalanche's website proudly proclaims: "We see our fusion power packs as the foundation for creating a world with abundant clean water, healthy oceans, vast rain forests, and immense glaciers in healthy equilibrium." A patent application filed by Langtry and Riordan contains some details of how their Orbitron may function. It describes an orbital containment system on the order of tens of centimeters in size, where a beam of fuel ions interacts with an electrostatic field to enter an elliptical orbit about an inner electrode. The application describes a system where ions last for a second or more — 10 times as long as in McGuire's simulations, and long enough for each ion to complete millions of orbits in the reactor. An article in GeekWire published as Avalanche exited stealth mode included a claim that the company had already produced neutrons via fusion.

Avalanche envisages small fusion packs with 5- to 15-kilowatt capacity, operating either on their own or grouped by the hundreds for megawatt-scale clean-energy solutions. The Pentagon is interested in the packs to potentially enable small spacecraft to maneuver freely in deep space, with higher power payloads.

The challenge now is for Avalanche to move from a 15-year old Ph.D. thesis in simulation to a working prototype in space, in just 60 months.

"While silicon-based solar cells dominate the photovoltaics market, silicon is far from the only material that can effectively harvest electricity from sunlight," notes Ars Technica: Thin-film solar cells using cadmium and telluride are common in utility-scale solar deployments, and in space, we use high-efficiency cells that rely on three distinct materials to harvest different parts of the spectrum. Another class of materials, which we're currently not using, has been the subject of extensive research: perovskites. These materials are cheap and incredibly easy to process into a functional solar cell. The reason they're not used is that they tend to degrade when placed in sunlight, limiting their utility to a few years. That has drawn the attention of the research community, which has been experimenting with ways to keep them stable for longer.

In Thursday's edition of Science, a research team from Princeton described how they've structured a perovskite material to limit the main mechanism by which it decays, resulting in a solar cell with a lifetime similar to that of silicon. While the perovskite cell isn't as efficient as what is currently on the market, a similar structure might work to preserve related materials that have higher efficiencies.
Their research involved a capping layer that's just a few atoms thick, according to an announcement from Princeton University, calling the resulting solar cell "a major milestone for an emerging class of renewable energy technology... the first of its kind to rival the performance of silicon-based cells, which have dominated the market since their introduction in 1954..."

"The team projects their device can perform above industry standards for around 30 years, far more than the 20 years used as a threshold for viability for solar cells." Perovskites can be manufactured at room temperature, using much less energy than silicon, making them cheaper and more sustainable to produce. And whereas silicon is stiff and opaque, perovskites can be made flexible and transparent, extending solar power well beyond the iconic panels that populate hillsides and rooftops across America....

[Engineering professor/team lead] Loo said it's not that perovskite solar cells will replace silicon devices so much that the new technology will complement the old, making solar panels even cheaper, more efficient and more durable than they are now, and expanding solar energy into untold new areas of modern life. For example, Loo's group recently demonstrated a completely transparent perovskite film (having different chemistry) that can turn windows into energy producing devices without changing their appearance. Other groups have found ways to print photovoltaic inks using perovskites, allowing formfactors scientists are only now dreaming up.

IEEE Spectrum reports: For decades, hopeful techies have been promising a world where absolutely every object you encounter — bandages, bottles, bananas — will have some kind of smarts thanks to supercheap programmable plastic processors. If you've been wondering why that hasn't happened yet, it's that nobody has built working processors that can be made in the billions for less than a penny each.... The problem, according to engineers at the University of Illinois Urbana-Champaign and at British flexible-electronics manufacture PragmatIC Semiconductor, is that even the simplest industry-standard microcontrollers are too complex to make on plastic in bulk.

In research to be presented at the International Symposium on Computer Architecture later this month, the transatlantic team presents a simple yet fully functional plastic processor that could be made at sub-penny prices. The Illinois team designed 4-bit and 8-bit processors specifically to minimize size and maximize the percentage of working integrated circuits produced. Eighty-one percent of the 4-bit version worked, and that's a good enough yield, says team leader Rakesh Kumar, to breach the one-penny barrier.

"Flexible electronics has been niche for decades," says Kumar. He adds that this yield study shows "that they may be ready for the mainstream."
Thanks to Slashdot reader Iamthecheese for sharing the article

An anonymous reader quotes a report from Interesting Engineering: [T]he world is now one step closer to seeing operational space-based solar energy as scientists from China's Xidian University completed testing and inspection on a ground array built to collect space-based solar power. They conducted a successful test of the "world's first full-link and full-system solar power plant" on June 5, according to a press statement from the university. The space-based solar power plant is a 246-feet-tall (75 meters) steel tower built on Xidian University's southern campus.

In theory, the Xidian University power plant will connect to orbital satellites that will harvest solar power 24/7 due to their geostationary orbits, before beaming that energy down to Earth via high-frequency microwave beams. The power plant will feature five different subsystems aimed at developing space-based solar power arrays. Space-based solar power has great potential as it can collect energy continuously while sidestepping common problems such as bad weather and waiting for daybreak. However, hurdles do remain, such as assessing the effects of a high-frequency energy beam on communications, air traffic, and the well-being of nearby residents.

Xidian University's new ground station is part of a space-based solar power proposal called OMEGA, which stands for Orb-Shape Membrane Energy Gathering Array. The project was first proposed in 2014 by Duan Baoyan from the Xidian University School of Electromechanical Engineering and his colleagues. [...] China's OMEGA project, meanwhile, has successfully transmitted energy wirelessly as microwaves over a distance of approximately 180 feet (55 meters). This capability puts the project three years ahead of its original schedule, the university says in its press release. Still, Baoyan concedes that a lot of work is still required, and fully operational space-based solar power could still be years away.

An anonymous reader quotes a report from ZDNet: The memory of "Batterygate" continues to be a thorn in Apple's side. In case you need a reminder, "Batterygate" refers to a 2016/17 scandal where Apple added an undocumented battery throttling capabilities to iOS 10.2.1 designed to slow the performance of the iPhone if the battery was deemed to be worn. It also came with unexpected side effects, causing handsets to reboot in cold weather or when the battery's charge level was low. The feature was initially rolled out to iPhone 6, iPhone 6s, and iPhone SE and later expanded to include the iPhone 7, 7 Plus, 8, 8 Plus and iPhone X models.

This latest UK-based multimillion-pound legal claim has been launched by Justin Gutmann, a consumer rights campaigner, and alleges that Apple deliberately misled users, and rather than roll out a battery recall or replacement program; the company instead pushed out this feature to cover up the fact that older iPhone batteries were not able to cope with the new power demands put on them.

Apple did eventually roll out a $29 battery replacement program, a program that saw the company carry out 11 million battery replacements in 2018, compared to the 1 to 2 million that would normally be carried out in a year. This resulted in Apple issuing a profit warning in January 2019, the company's first since 2002. If Apple loses, the company could be forced to pay damages of more than $950m to the 25 million people who purchased affected iPhones. Following the US settlement in March 2020, Apple agreed to settle a class-action lawsuit over the same issue, paying out $25 per iPhone, with the total capped at $310m. "We have never -- and would never -- do anything to intentionally shorten the life of any Apple product or degrade the user experience to drive customer upgrades," Apple said in a statement on Thursday. "Our goal has always been to create products that our customers love, and making iPhones last as long as possible is an important part of that."

Taiwan Semiconductor Manufacturing Co. today officially introduced its N2 (2nm class) manufacturing technology, its first node that will use gate-all-around field-effect transistors (GAAFETs), at its 2022 TSMC Technology Symposium. From a report: The new fabrication process will offer a full-now performance and power benefits, but when it comes to transistor density, it will barely impress in 2025 when it comes online. Being an all-new process technology platform, TSMC's N2 brings in two essential innovations: nanosheet transistors (which is what TSMC calls its GAAFETs) and backside power rail that both serve the same goal of increasing performance-per-watt characteristics of the node. GAA nanosheet transistors feature channels surrounded by gates on all four sides, which reduces leakage; furthermore, their channels can be widened to increase drive current and boost performance or shrunken to minimize power consumption and cost. To feed these nanosheet transistors with enough power and now waste any of it, TSMC's N2 uses backside power delivery, which the foundry considers to be among the best solutions to fight resistances in the back-end-of-line (BEOL).

Indeed, when it comes to performance and power consumption, TSMC's nanosheet-based N2 node can boast of a 10% to 15% higher performance at the same power and complexity as well as a 25% to 30% lower power consumption at the same frequency and transistor count when compared to TSMC's N3E. However, the new node increases chip density by only around 1.1X compared to N3E. In general, TSMC's N3 does offer full-node performance increases and power consumption reductions. But density-wise, the new technology can hardly impress. For example, TSMC's N3E node offers a 1.3X chip density increase over N5, which is a substantial increase.

Jakub Kaminski is a robotics engineering graduate student at Worcester Polytechnic Institute in Massachusetts. With some volunteers he spent two months designing the perfect tourniquet for the battlefields of Ukraine, designed meet the highest medical standards — and then uploaded it to 3DPrintingForUkraine.com.

Now in less than 8 weeks "around 120 individuals and companies worldwide with 3D printers have accessed the design," reports the Washington Post. [Alternate URL here] "Together, they have made roughly 5,000 reusable tourniquets that are bound for Ukraine, where they will be stitched and sent off to the battlefield, Kaminski said..." Using digital files, people are designing supplies such as bandages, tourniquets, splints and add-ons to AK-47 guns.... [In February, as Russia began its invasion] people in the 3D-printing community talked with Ukrainian military officials, hospital administrators and charity organizations, trying to gauge what they could print quickly that would be most helpful. Tourniquets and bandages were repeated requests. Mykhailo Shulhan, the chief operating officer of a Ukrainian 3D-printing company in Lviv, said that as soon as the invasion began, he started researching how 3D printers helped in other conflicts....

These days, his company, 3D Tech Addtive, develops and prints an array of weapons accessories: AK-47 holsters so soldiers have a way to rest their guns; bullet magazines since empty cartridges often get thrown away instead of reused; carrying bags for grenades; and most recently, anti-reflective lenses for sniper scopes to reduce glare and prevent Ukrainian snipers from being seen. (All together, they have provided over 5,000 components to the front lines, Shulhan estimated....)

While most 3D printers create supplies to stop death or ease fighting conditions, others are focusing on rehabilitating soldiers. Brett Carey, a physical therapist in Hawaii, designs 3D printed splints that can be sent to fighters... Carey has created two digital designs for splints that have been uploaded online and 3D printed over 1,500 times. If injuries are advanced, he has people send him images of their injuries using EM3D — a 3D imaging app — which allows him to make a custom made splint which is then shipped to Ukraine...
The Post also got this quote from the robotics engineering student whose team designed the tourniquets.

"It's a beautiful thing," he said. "If you make people in Ukraine feel better, and enable people to help. ... This is something really special."