Vienna University sets fastest 3D-nanoprinting record

   Mar 14, 5:11 pm

London, March 14 (ANI): Researchers in Austria have set a new world speed record for the fastest 3D-printed nano-objects.

The team from the Vienna University of Technology has been able to create sculptures as small as a grain of sand in a fraction of the time than had previously been required.

To demonstrate the process the group created a model of a Formula 1 racing car 0.285mm (0.011in) in length in just over four minutes.

The scientists said the technique could be used to make small biomedical parts.

To produce the car about 100 layers, each consisting of 200 single printed lines, were created by Vienna University of Technology's equipment.

"The technology itself is quite well known in the science arena, but the problem was that it was always extremely slow," Prof Jurgen Stampfl of the University told the BBC.

"It was good as a showcase, but for real world applications it was much too time-consuming. Making complex large 3D structures would take hours or even days.

"Using our set-up and materials, we can speed that up by a factor of 500 or in some cases 1,000 times," he claimed.

The formal name for the process is "two-photon lithography". It involves focusing a laser beam onto liquid resin to harden it, leaving behind a line of solid polymer just a few nanometres wide.

Unlike traditional 3D-printing techniques, which build up an object by adding layers to its surface, the laser can create solid material anywhere within the liquid material.

The process gets its name because the resin only sets if the molecules within it absorb two photons of the laser beam at once - which only happens at the very centre of the beam.

The team's breakthrough involved improving the control mechanism for mirrors used to focus the laser, and developing the special type of resin involved in the process.

The researchers are now developing biocompatible resins so that the objects they create can be used by doctors.

One suggested application is to create scaffolds, which cells could use to build new biological tissues.

Prof Stampfl said his team's technique can work in water-based environments meaning it is also capable of creating scaffolds suitable for softer tissues such as cartilage and muscle tissue.

"We can also 'write' these structures in the presence of cells as we use an infrared laser which is completely harmless for biological tissue," he added.

"This is not possible with other 3D- printing techniques which first rely on making the scaffolds and then seed the cells, or use a thin inkjet nozzle to push through the cells which may damage them.

"The two-photon lithography technique lets us do the writing in the same space as the cells - what we call in-vivo writing," he added. (ANI)

Google to improve scrolling problems in Chrome with Microsoft's Pointer events Mar 26, 5:25 pm
Washington, Mar 26 (ANI): Google has announced its decision to adopt a standard that would allow both mouse and touch navigation for its Chrome browser.
Full Story
Study reveals not all password strength meters are effective Mar 26, 5:01 pm
Washington, March 26 (ANI): "Create a password" is a prompt familiar to anyone who's tried to buy a book from Amazon or register for a Google account. Equally familiar is that red / yellow / green bar that rates the new password's strength. But when those meters give the go-ahead to passwords like Password1+, their effectiveness is called into question.
Full Story
SpaceX's safety rockets successfully tested Mar 26, 4:30 pm
Washington, Mar.26 (ANI): American space transport Services Company SpaceX has successfully tested one of the most important components its crewed vehicle needs, the escape engine, SuperDraco.
Full Story
New update gives suspend and resume and external HD backup on PS4 Mar 26, 4:30 pm
Washington, Mar. 26 (ANI): Japanese conglomerate Sony announced an update for its gaming console Playstation 4 that will give it an ability to suspend game play and resume play where we left off after putting the console into Rest Mode and then waking it up again.
Full Story
Comments

LATEST STORIES
TOP VIDEO STORIES
PHOTO GALLERY