Fast New 3D Printing Technique Shines Holograms into Resin

Can a new 3D-printing technique shorten 3D printing times to just seconds? A team of researchers in Europe has modified Tomographic Volumetric Additive Manufacturing, which can “create entire objects in one shot by shining light patterns into liquid resin,” according to the 3D Printing Industry blog. (The liquid resin then solidifies when the light intensity is high enough…)

While this approach can fabricate support-free, micro-scale parts within tens of seconds, it is “highly inefficient.” This is because under 1% of the encoded light reaches the resin vial. Conventional TVAM can also lead to unwanted distortions and poor resolution due to light blurring and projection artifacts. To address these limitations, the researchers developed HoloVAM, a new technique that uses a 3D hologram instead of conventional volumetric light projections. This approach reportedly boosts light efficiency by 20 times, resulting in faster and more accurate 3D printing.

According to their paper, published in Nature Communications, HoloVAM successfully fabricated several millimeter-scale objects in under 60 seconds with fine details as small as 31 micrometers…
They believe this new approach offers value for medical bioprinting applications, thanks to HoloVAM’s use of “self-healing beams.” These can generate and retain their shape when passing through materials, which is particularly valuable when 3D printing with cell-laden bio-resins and hydrogels.
Thanks to Slashdot reader BizarreVR for sharing the news.

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How to Install ZFS on Debian/Ubuntu

ZFS (Zettabyte File System) is a robust file system designed to manage large amounts of data while ensuring integrity, scalability, and advanced features like snapshots, compression, and data deduplication. This guide will take you through the steps required to install and enable ZFS on Debian or Ubuntu.

Firefly’s Blue Ghost lander successfully touched down on the moon

Firefly Aerospace’s first attempt at landing on the moon was a success. The company, which is working with NASA under the agency’s Commercial Lunar Payload Services (CLPS) program, announced early Sunday morning that its Blue Ghost lander softly touched down on the moon, and it’s upright and communicating with the team back home. Blue Ghost landed at 3:34AM ET in a region known as Mare Crisium. While Firefly’s lander isn’t the first commercial spacecraft to land on the moon, it is the first to land properly — Intuitive Machines’ Odysseus ended up on its side last year after a faster-than-planned descent.

Blue Ghost and the NASA instruments it’s carrying are expected to remain in operation for about 14 Earth days. After that, lunar night will begin. If all goes as planned, the lander will capture images in the leadup to lunar night and a few hours after darkness falls, getting high-definition imagery of a total eclipse, the lunar sunset and other moments to document the behaviour of levitating lunar dust. NASA is also testing instruments that can drill and collect samples from the surface.

Firefly’s Blue Ghost Mission 1 launched on January 15 and reached lunar orbit about a month later. The team says it’s already sent over 27 GB of data back to Earth from its journey. “Just through transit to the Moon, Firefly’s mission has already delivered the most science data to date for the NASA CLPS initiative,” Shea Ferring, Firefly’s Chief Technology Officer, said in a statement, noting that the hardest part of the mission is over. On X, the company shared a photo showing the lander’s shadow on the surface of the moon following its successful touchdown, and joked, “The lander saw her shadow, 2 more weeks of ops!”

This article originally appeared on Engadget at https://www.engadget.com/science/space/fireflys-blue-ghost-lander-successfully-touched-down-on-the-moon-155728834.html?src=rss

Forget iPhone 17 Air, Tecno Spark Slim Is A Stupid Thin Phone With A Big Battery

Forget iPhone 17 Air, Tecno Spark Slim Is A Stupid Thin Phone With A Big Battery
Seeing smartphone makers trip over themselves in a suddenly emerging race to claim the title of world’s thinnest handset reminds us of the classic Saturday Night Live skit, the one where Will Ferrell pulls out a ridiculously tiny flip phone, much to the glee of Jimmy Fallon and guest host Sean Hayes, both of which broke character with laughter

First Petawatt Electron Beam Arrives, Ready To Rip Apart Matter and Space

Petawatt lasers have already allowed scientists to “manipulate materials in new ways, emulate the conditions inside planets, and even split atoms,” reports Science magazine. “Now, accelerator physicists have matched that feat, producing petawatt pulses of electrons that could also have spectacular applications…”

Described in a paper published Thursday in Physical Review Letters, the electron pulses last one-quadrillionth of a second but carry 100 kiloamps of current. “It’s a supercool experiment,” says Sergei Nagaitsev, an accelerator physicist at Brookhaven National Laboratory who was not involved in the work. Richard D’Arcy, a plasma accelerator physicist at the University of Oxford, adds, “It’s not just an experimental demonstration of something interesting, it’s a steppingstone on the way to megaamp beams.” If achievable, those even more powerful beams might begin to perform extraordinary feats such as ripping particles out of empty space, he says…

[A]mped-up lasers would open the way to, for example, probing chemical processes as they happen, says Sergei Nagaitsev [an accelerator physicist at Brookhaven National Laboratory who was not involved in the experiment]. “These are the easy pickings.” An ultraintense electron pulse could also be used to generate plasmas like those seen in astrophysics, such as the jets of matter and radiation that shoot out of certain stellar explosions at near-light-speed. Researchers need only fire the electron beam into the right target. “This is a fantastic relativistic drill,” Ferrario says. “The interaction of this with matter could be very interesting.”

Superintense electron bunches might someday even probe the nature of empty space. They produce a hugely intense electric field, so if one of them were to collide with an ultraintense laser pulse, which also contains a huge electric field, it would expose space to an incredibly strong electrical polarization, D’Arcy notes. If that field is strong enough, it should begin to rip particle-antiparticle pairs out of the vacuum, a phenomenon predicted by quantum physics but never observed. “You can access areas of particle physics that are inaccessible elsewhere,” Darcy says.
Thanks to Slashdot reader sciencehabit for sharing the article.

Read more of this story at Slashdot.

NVIDIA Is Finding Great Success With Vulkan Machine Learning – Competitive With CUDA

It’s not only AMD that is working on Vulkan/SPIR-V support for machine learning / AI software but NVIDIA has been working on improvements too for enhancing Vulkan-powered machine learning software. The outlook for using Vulkan within machine learning software is quite positive and even able to offer similar performance to NVIDIA’s prized CUDA…

The Xiaomi 15 Ultra is a Leica-powered photo showcase

Practically every flagship phone can take a great picture. But that hasn’t stopped Xiaomi from continuing its partnership with legendary camera maker Leica to produce a photo powerhouse in the new Xiaomi 15 Ultra.

Powered by a Snapdragon 8 Elite chip with up to 16GB of RAM and 1TB of storage, it goes without saying that the Xiaomi 15 Ultra has top-notch specs. It also has a huge 6,000 mAh battery, which is bigger than anything you get from Apple, Google or Samsung. Meanwhile, when it comes to charging, wired speeds go up to 90 watts or just a tad slower at 80 watts wirelessly, which is no mean feat. And unlike most phones sold in the US, it comes with a power adapter in the box.

Elsewhere, the 15 Ultra sports a gorgeous 6.7-inch AMOLED display with a 1-120Hz refresh rate and up to 3,200 nits of brightness. It’s also available in three colorways: a white model with an etched back, black with an almost rubbery textured finish and a special Silver Chrome edition that draws inspiration from some of Leica’s old-school cameras. I appreciate that the white model I tested features subtle swerves carved into its back that shine in the sunlight. But let’s be honest, that two-toned metal and black one is easily the most attractive of the bunch because it really leans into what this phone does best.

In back, there’s a massive circular camera module that normally I’m not a huge fan of when used on rival devices like the OnePlus 13. However, on this device, it’s more than just a showpiece because inside it is some serious photo hardware. The Ultra 15’s 23mm equivalent main camera uses a massive 1-inch 50-megapixel Sony sensor. Then, for stuff like expansive landscapes, there’s an f/2.2 50-MP ultrawide cam. But it doesn’t stop there because there’s not one but two zoom lenses: a 50MP midrange shooter with a 70mm focal length plus a super high-res 200MP periscope array with a 100mm focal length (which equates to a 4.7x optical zoom).

Now, I haven’t had a ton of time to fully put it through its paces, but from what I’ve seen so far, the Xiaomi Ultra 15 has one of the most well-rounded photo toolkits around. It’s got Leica optics along with big sensors and lenses that cover pretty much every focal length you’d need on a daily basis. And on the software side, there are some preset Leica filters like Vibrant or Authentic to really drive home the collaboration between the two brands.

The Xiaomi 15 Ultra with its optional photography kit.
Sam Rutherford for Engadget

That said, one of the things that impresses me the most is that Xiaomi even created a separate Photography kit that includes an add-on camera grip with a physical shutter button, an adjustable dial and a dedicated video button. There’s also a case that allows you to attach a standard 67mm filter adapter. This means, assuming you have the right gear, you can take some of the same glass you use on your real camera and use it with the Ultra 15. And this isn’t just some half-hearted afterthought either, as the kit also comes with bonuses like a hand strap, a decorative lens ring and two different removable caps for its shutter.

Notably, unlike some Chinese phones like those from Huawei, Xiaomi handsets still have access to Google services, so you can download apps from the Play Store. Even the company’s HyperOS 2 is a relatively minimalist Android skin that looks good and is easy to use. And while this model will be available globally starting at around €850, sadly there are no official plans to bring it to the US, which is a real shame because no one is really selling handsets like this in America anymore. (RIP to the Panasonic Lumix DMC-CM1.)

This article originally appeared on Engadget at https://www.engadget.com/mobile/smartphones/the-xiaomi-15-ultra-is-a-leica-powered-photo-showcase-143001055.html?src=rss