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Technology A new volumetric 3D-printing technique using light

19:10  14 february  2020
19:10  14 february  2020 Source:   msn.com

Scientists just 3D printed a superweapon to fight back against bacteria

  Scientists just 3D printed a superweapon to fight back against bacteria The war against the spread of bacteria in places like hospitals and medical centers is often waged using chemical sprays that kill off pesky microorganisms before they can cause problems. They tend to work great, but they're not suitable for every application and have to be used repeatedly to keep a surface sanitary. But what if a surface itself could fight back against bacteria? Scientists from the University of Sheffield might have pulled off that incredible feat with a lot of help from 3D printing technology. Their research was published in the journal Scientific Reports.

Researchers at the École polytechnique fédérale de Lausanne (EPFL) in Switzerland have developed a new method to create small soft objects using a laser and a liquid photo-sensitive polymer. Christened "volumetric 3D-printing", the technique, which is particularly rapid, has potential applications in a wide range of fields, including bioprinting.

a close up of a measure: An example 3D object printed with light.© Courtesy of EPFL / Alain Herzog An example 3D object printed with light.

An online video shows an object taking shape in a rotating tube of photo-sensitive liquid polymer which solidifies when it absorbs light. The technique, based on tomography algorithms used in medical imaging, can produce precisely sculpted small objects in record time.

Ford is 3D printing unique wheel nut locks based on driver voices

  Ford is 3D printing unique wheel nut locks based on driver voices If you've got a set of sweet alloys on your car, you've likely got them protected with locking nuts which can only be loosened with a special key. But these aren't invulnerable to thieves, who are increasingly targeting car parts as vehicle security becomes more sophisticated. As such, Ford has come up with a novel way of using 3D printing to keep your alloys safe. Engineers at the automaker have designed locking nuts with unique contours based on the driver's voice. Software is used to convert soundwaves -- taken from driver saying something like "I drive a Ford Fiesta" -- into a physical, printable pattern.

The team has also published a study entitled "High-resolution tomographic volumetric additive manufacturing" in Nature Communication vaunting the merits of the new technique, which is ten times faster than standard layer-by-layer 3D-printing.

The new technology could have applications in a range of fields, notably in medicine and biology. Being able to produce an object in a single piece allows for the printing of different textures, like tissues and bodily organs, and also hearing implants and dental guards.

As it stands, the researchers claim to be able to produce structures of up to 2 centimeters, with a precision of 80 micrometers, but with time they plan on scaling up to 15 centimeters.

The new patent-pending technology has now been entrusted to a dedicated start-up, Readily3D.

- Demonstration of volumetric 3D printing: youtu.be/ONBHkzimRbg

This new 3D printing breakthrough will blow your mind .
Researchers may have just figured out completely transform fields like medicine and biology, thanks to an innovative new 3D-printing technique that could be used to produce objects ranging from tissue to organs, mouthguards, and hearing aids -- all in a matter of seconds. It's the result of a new technique developed by researchers at the Laboratory of Applied Photonics Devices within Switzerland's Ecole polytechnique fédérale de Lausanne. The technique starts with a translucent liquid, and slowly the object begins to take shape in a small, spinning container.

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