Skip to Content

Micro 3-D Printer Creates Tiny Structures in Seconds

Faster printing could see the technology move from research labs to industry.
March 5, 2013

Nanoscribe, a spin-off from the Karlsruhe Institute of Technology in Germany, has developed a tabletop 3-D microprinter that can create complicated microstructures 100 times faster than is possible today. “If something took one hour to make, it now takes less than one minute,” says Michael Thiel, chief scientific officer at Nanoscribe.

3D printer closeup
Micro printing: A scanning electron microscope image shows a cell scaffold printed using Nanoscribe’s new device.

While 3-D printing of toys, iPhone covers, and jewelry continues to grab headlines (see “The Difference Between Makers and Manufacturers”), much of 3-D printing’s impact could be at a much smaller scale. Micrometer-scale printing has shown promise for making medical and electronic devices.

Thiel says it should be possible to speed up his company’s microprinting technique even more in the future. Nanoscribe plans to start selling its machine in the second half of this year.

3D printer parts
Shape making: Two scanning electron microscope images show a printed cell scaffold (top) and an array of microneedles.

Printing microstructures with features a few hundred nanometers in size could be useful for making heart stents, microneedles for painless shots, gecko adhesives, parts for microfluidics chips, and scaffolds for growing cells and tissue. Another important application could be in the electronics industry, where patterning nanoscale features on chips currently involves slow, expensive techniques. 3-D printing would quickly and cheaply yield polymer templates that could be used to make metallic structures.

So far, 3-D microprinting has been used only in research laboratories because it’s pretty slow. In fact, many research labs around the world use Nanoscribe’s first-generation printer. The new, faster machine will also find commercial use. Thiel says numerous medical, life sciences, and nanotechnology companies are interested in the new machine. “I’m positive that with the faster throughput we get with this new tool, it might have an industrial breakthrough very soon,” he says.

The technology behind most 3-D microprinters is called two-photon polymerization. It involves focusing tiny, ultrashort pulses from a near-infrared laser on a light-sensitive material. The material polymerizes and solidifies at the focused spots. As the laser beam moves in three dimensions, it creates a 3-D object.

Today’s printers, including Nanoscribe’s present system, keep the laser beam fixed and move the light-sensitive material along three axes using mechanical stages, which slows down printing. To speed up the process, Nanoscribe’s new tool uses a tiny moving mirror to reflect the laser beam at different angles. Thiel says generating multiple light beams with a microlens array could make the process even faster.

The smallest features that can be created using the Nanoscribe printer measure about 30 nanometers, says Julia Greer, professor of materials science at the California Institute of Technology.

“This is very challenging to do, and the Nanoscribe tool excels at it,” Greer says. “I don’t think there is another company out there that is capable of such precision.” Greer’s research team uses the first-generation Nanoscribe printer to create and study materials that could be used for catalysts and to make strong, lightweight structures, but she acknowledges that its slowness is a drawback.

Keep Reading

Most Popular

Russian servicemen take part in a military drills
Russian servicemen take part in a military drills

How a Russian cyberwar in Ukraine could ripple out globally

Soldiers and tanks may care about national borders. Cyber doesn't.

Death and Jeff Bezos
Death and Jeff Bezos

Meet Altos Labs, Silicon Valley’s latest wild bet on living forever

Funders of a deep-pocketed new "rejuvenation" startup are said to include Jeff Bezos and Yuri Milner.

conceptual illustration showing various women's faces being scanned
conceptual illustration showing various women's faces being scanned

A horrifying new AI app swaps women into porn videos with a click

Deepfake researchers have long feared the day this would arrive.

ai learning to multitask concept
ai learning to multitask concept

Meta’s new learning algorithm can teach AI to multi-task

The single technique for teaching neural networks multiple skills is a step towards general-purpose AI.

Stay connected

Illustration by Rose WongIllustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.