People are exploring the use of 3D printing for wide-ranging applications, including manufacturing, medical devices, fashion and even food. But one of the most efficient forms of 3D printing suffers from a major drawback: It can only print objects that are gray or black in color. Now, researchers have tweaked the method so it can print in all of the colors of the rainbow.
They report their results in the ACS journal Nano Letters.
Selective laser sintering (SLS) printers use a laser to heat specific regions of a powdered material, typically nylon or polyamide, so that the powder melts or sinters to form a solid mass. The printer adds then selectively sinters new powdered material layer by layer until the desired 3D structure is obtained. To reduce the energy requirements of the process, researchers have added compounds called photosensitizers to the polymer powders. These materials, such as carbon nanotubes, carbon black and graphene, absorb light much more strongly than the polymers and transfer heat to them, enabling the use of cheaper, lower-power lasers. However, the carbon-based photosensitizers can only produce printed objects that are gray or black. Gerasimos Konstantatos, Romain Quidant and their coworkers at The Institute of Photonic Sciences (IFCO) wanted to find a photosensitizer that would enable color printing by the SLS method.
The researchers designed gold nanorods to strongly absorb in the near-infrared region of the spectrum while being almost transparent to visible light. They coated them with silica and then mixed them with polyamide powders to print 3D objects. They found that the gold nanorods were much better at converting light from the laser to heat than carbon black, the industry standard. Also, the new photosensitizers could produce much whiter and — when mixed with dyes — brightly colored 3D objects. Importantly, the materials are cost-effective for large-scale production. The researchers have filed several patent applications related to the new technology.
Learn more: Fast, cheap and colorful 3D printing
The Latest on: 3D printing
No news articles
via Google News
The Latest on: 3D printing
- The 3D Printing Building Construction Market Is Expected To Grow At A 169% Rate With The Rise In Construction Projectson September 28, 2022 at 10:36 am
An increase in new construction projects globally is expected to drive the growth of the 3D printing building construction market. Construction 3D printing may make it possible to manufacture ...
- 3D printing can now manufacture customized sensors for robots, pacemakers, and moreon September 28, 2022 at 8:10 am
A newly-developed 3D printing technique could be used to cost-effectively produce customized electronic "machines" the size of insects, which could enable advanced applications in robotics and medical ...
- DB Schenker will now 3D print spare parts from the cloudon September 28, 2022 at 7:09 am
We want to shorten distances and at the same time keep products available faster and cheaper: CEO Jochen Thewes ...
- How 3D Printing Is Reshaping Manufacturing as We Know Iton September 28, 2022 at 6:00 am
The '90s digital revolution was inevitable, considering how an internet-connected PC was all it took to create a Google or Apple. But Manufacturing isn't as easy—that's why there hasn't been a Silicon ...
- Firehawk's rocket engines and 3D printing fuels successfully passed the testson September 28, 2022 at 3:30 am
American rocket engine startup Firehawk has succeeded in passing the tests of 3D printing fuel and rocket engines.
- 3D Printing Alloy Powder Market : Reliable Business Data Analysis and Forecast by 2028 with Top Countries Dataon September 27, 2022 at 11:01 pm
Number of Tables and Figures :158 | The global "3D Printing Alloy Powder Market"size is projected to reach Multimillion ...
- Hasbro combines selfies and 3D printing to put your face on a famous action figureon September 27, 2022 at 3:11 pm
If you've ever wanted to become an action figure, Hasbro is providing you the opportunity with its new 3D-printed Selfie Series action figures.
- SUNLU T3 FDM 3D printer review: Does anyone need these speeds?on September 27, 2022 at 3:06 pm
Seemingly pushing a less-intimidating T3 name over its Terminator 3 title at launch, SUNLU offers some tremendous speeds if you have the filament to match. The T3 is relatively simple to construct and ...
- Like a Swarm of Bees, These Drones Can 3D Print Structures While in Flighton September 27, 2022 at 12:23 pm
The fleet printed multiple structures—using materials from foam to a cement-like goo—to millimeter accuracy with minimal human supervision.
via Bing News