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Archivo del Autor: Belen De Leon

Micro-angelo? This 3D-printed ‘David’ is just one millimeter tall

3D printing has proven itself useful in so many industries that it’s no longer necessary to show off, but some people just can’t help themselves. Case in point: this millimeter-tall rendition of Michelangelo’s famous “David” printed with copper using a newly developed technique.

The aptly named “Tiny David” was created by Exaddon, a spin-off company from another spin-off company, Cytosurge, spun off from Swiss research university ETH Zurich. It’s only a fraction of a millimeter wide and weighs two micrograms.

It was created using Exaddon’s “CERES” 3D printer, which lays down a stream of ionized liquid copper at a rate of as little as femtoliters per second, forming a rigid structure with features as small as a micrometer across. The Tiny David took about 12 hours to print, though something a little simpler in structure could probably be done much quicker.

As it is, the level of detail is pretty amazing. Although, obviously, you can’t recreate every nuance of Michelangelo’s masterpiece, even small textures like the hair and muscle tone are reproduced quite well. No finishing buff or support struts required.

Of course, we can create much smaller structures at the nanometer level with advanced lithography techniques, but that’s a complex, sensitive process that must be engineered carefully by experts. This printer can take an arbitrary 3D model and spit it out in a few hours, and at room temperature.

The CERES printer.

But the researchers do point out that there is some work involved.

“It is more than just a copy and downsized model of Michelangelo’s David,” said Exaddon’s Giorgio Ercolano in a company blog post. “Our deep understanding of the printing process has led to a new way of processing the 3D computer model of the statue and then converting it into machine code. This object has been sliced from an open-source CAD file and afterwards was sent directly to the printer. This slicing method enables an entirely new way to print designs with the CERES additive micromanufacturing system.”

Much smaller than that doesn’t work, though — Micro-David starts looking like he’s made of Play-Doh snakes. That’s fine, they’ll get there eventually.

The team published the details of their newly refined technique (it was pioneered a few years ago but is much better now) in the journal Micromachines.


Source: TechCrunch

2019's Weirdest and WIRED-est Photos

Highlights of our favorite photography to write about this year.
Source: Wired

What’s worse than Christmas music? Bitcoin Christmas music

The holiday season can be a lot. You might need something to make you feel better. This post doesn’t have it. But it does have some pretty terrible bitcoin Christmas music parodies that you can endure!

Enjoy:

In fact, the same account has made a bunch of similar pieces of musical fanfiction, proving the point that bitcoin fans are like other traders, but with fewer friends.

Take one for the road:

Now go get offline and spend time with someone you love.


Source: TechCrunch

The 10 Worst Tech Product Launches of the 2010s

It wasn’t all unicorns and cryptokitties. From Apple’s Antennagate to Juicero’s fruit bomb, the decade offered up plenty of brutally expensive embarrassments.
Source: Wired

Chatroulette Was Shorthand for Chaos Online. Then Came the 2010s

The video chat site wasn’t exactly civil—far from it—but it pales in comparison to the actual chaos of the past decade.
Source: Wired

Got the Flu? These Doctors Really Want to See You—Virtually

Getting sick is the worst. But if you’re trying to lure customers who are reluctant or unable to leave home, the virus can be an ally.
Source: Wired

2020 Lamborghini Aventador SVJ Roadster first drive review: Illogical yet sublime – Roadshow

Taking the roof off of a car designed for maximum performance on the track might not make much sense, but here the rules of logic do not apply.
Source: CNET

When is episode 8 of The Mandalorian arriving on Disney Plus? – CNET

The Star Wars schedule is kinda weird. Check when the finale of The Mandalorian will be available.
Source: CNET

We just learned what Finn wanted to tell Rey in Star Wars: The Rise of Skywalker – CNET

It wasn’t “I love you.”
Source: CNET

DJI patents an off-road rover with a stabilized camera on top

DJI is easily the leading brand when it comes to camera drones, but few companies have even attempted a ground-based mobile camera platform. The company may be moving in that direction, though, if this patent for a small off-road vehicle with a stabilized camera is any indication.

The Chinese patent, first noted by DroneDJ, shows a rather serious-looking vehicle platform with chunky tires and a stabilized camera gimbal. As you can see in the image above, the camera mount is protected against shock by springs and pneumatics, which would no doubt react actively to sudden movements.

The image is no simple sketch like those you sometimes see of notional products and “just in case” patents — this looks like a fleshed-out mechanical drawing of a real device. Of course, that doesn’t mean it’s coming to market at all, let alone any time soon. But it does suggest that DJI’s engineers have dedicated real time and effort to making this thing a reality.

Why have a “drone” on the ground when there are perfectly good ones for the air? Battery life, for one. Drones can only be airborne for a short time, even less when they’re carrying decent cameras and lenses. A ground-based drone could operate for far longer — though naturally from a rather lower vantage.

Perhaps more importantly, however, a wheeled drone makes sense in places where an aerial one doesn’t. Do you really want to fly a drone through narrow hallways in security sweeps, or in your own home? And what about areas where you might encounter people? It would be better not to have to land and take off constantly for safety’s sake.

It’s likely that DJI has done its homework and knows that there are plenty of niches to which they could extend if they diversified their offerings a bit. And like so many situations where drones have become commonplace, we’ll all think of these robot-powered industries as obvious in retrospect. For instance, the winner of our Startup Battlefield at Disrupt Berlin, Scaled Robotics, which does painstaking automated inspections of construction sites.

In fact DJI already makes a ground-based robotic platform, the RoboMaster S1. This is more of an educational toy, but may have served as a test bed for technologies the company hopes to apply elsewhere.

Whether this little vehicle ever sees the light of day or not, it does make one think seriously about the possibility of a wheeled camera platform doing serious work around the home or office.


Source: TechCrunch

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