Archive for the ‘3D printing’ category: Page 2

Apr 21, 2022

Laser-based 3D printer can produce complex objects in any order

Posted by in categories: 3D printing, energy

A 3D printer that uses lasers to build up an object in any order, rather than layer by layer, could produce more advanced designs than is currently possible.

Existing 3D printers work by depositing layers of a plastic filament from a nozzle or by curing layers of resin with UV light. In both cases objects are built up one layer at a time, meaning that overhanging parts of a structure – the outstretched arms of a model human, say – must be propped up by temporary supports until printing is complete. These supports must then be carefully removed manually.

To get around this, Dan Congreve at Stanford University in California and his colleagues created a 3D-printing system that involves focusing a red laser at a particular point in a pool of resin. The resin is impregnated with particles 80 nanometres wide that convert red light into blue once the light hits a certain energy threshold, which only occurs at the point where the red laser is precisely focused.

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Apr 20, 2022

NASA’s new material is 1000-times stronger than its previous alloys

Posted by in categories: 3D printing, materials

Using material modelling and 3D printing, researchers were able to produce new material quicker and at a lower cost.

Apr 20, 2022

3D Printed IC to Reshape the Semiconductor Industry

Posted by in categories: 3D printing, computing

3D printed ICs overcome semiconductor shortage and reinforce supply chains, leading to cheaper production costs, faster prototyping, and faster time to market.

As the size of microchip packages shrinks, semiconductor manufacturers are under pressure to improve lithography capabilities. For more than two decades, researchers have been working on 3D printed integrated circuits. Earlier attempts at 3D printing electronics used the proper technique but failed to reach the required levels of conductivity for a PCB, leaving complicated electrical circuits unusable. Over time though, these printing tools have gradually improved feature size resolution, yield, and variability in production.

● A broad variety of materials may be used to produce an assortment of printed electronics, including conductors, semiconductors, dielectrics, resistors, and other components. ● As has been the case in other areas, additive manufacturing is expected to result in more innovative products, lower costs, and faster production runs.

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Apr 18, 2022

How to print a robot from scratch: Combining liquids, solids could lead to faster, more flexible 3D creations

Posted by in categories: 3D printing, biotech/medical, robotics/AI

Imagine a future in which you could 3D-print an entire robot or stretchy, electronic medical device with the press of a button—no tedious hours spent assembling parts by hand.

That possibility may be closer than ever thanks to a recent advancement in 3D-printing technology led by engineers at CU Boulder. In a new study, the team lays out a strategy for using currently-available printers to create materials that meld solid and liquid components—a tricky feat if you don’t want your robot to collapse.

“I think there’s a future where we could, for example, fabricate a complete system like a robot using this process,” said Robert MacCurdy, senior author of the study and assistant professor in the Paul M. Rady Department of Mechanical Engineering.

Apr 18, 2022

Like a swarm of bees, these 3D printing robots can build almost any structure

Posted by in categories: 3D printing, robotics/AI

Developed by advanced manufacturing company AMBOTS, these 3D printing robots can build just about anything.

Apr 15, 2022

Italian City Implements 3D Printed Benches Made From Recycled Plastic

Posted by in categories: 3D printing, materials

In recent years, more and more environmentally friendly projects are being developed in many countries all around the world. Similar to earlier successful projects, like for example the Netherlands-based Print your City, R3direct from Italy is now also starting to use additive manufacturing as an eco-friendly option to develop street furniture. By using plastic waste as their main material and with the help of modern technology, the company is now 3D printing benches. And the first example of this is already installed in the heart of Lucca, Italy. Called USE (Urban Safety Everyday), these benches are intended to show that technologies can make it possible to significantly reduce plastic waste by reusing the recycled material.

Italian manufacturing company introduces new, eco-friendly public benches made of recycled plastic using 3D printing technologies.

Apr 13, 2022

3D printing smart clothes with a new liquid metal-alginate ink

Posted by in categories: 3D printing, mobile phones

In the future, smart clothing might monitor our posture, communicate with smartphones and manage our body temperature. But first, scientists need to find a way to cost-effectively print intricate, flexible and durable circuits onto a variety of fabrics. Now, researchers reporting in ACS Applied Materials & Interfaces have developed a conductive 3D printing ink made of liquid metal droplets coated with alginate, a polymer derived from algae.

Conventional electronics are rigid and unable to withstand the twisting and stretching motions that clothing undergoes during typical daily activities. Because of their fluid nature and excellent conductivity, gallium-based liquid metals (LMs) are promising materials for . However, LMs don’t stick well to fabrics, and their large surface tension causes them to ball up during 3D printing, rather than form continuous circuits. Yong He and colleagues wanted to develop a new type of conductive ink that could be 3D printed directly onto clothing in complex patterns.

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Apr 10, 2022

Smarter 3D printing makes better parts faster

Posted by in category: 3D printing

3D printers may soon get better at producing intricate metal and plastic parts, thanks to new software developed at the University of Michigan that reduces harmful heat buildup in laser powder bed fusion printers.

Called SmartScan, the software demonstrated a 41% improvement in heat distribution and a 47% reduction in deformations in a recent study.

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Apr 8, 2022

New breakthrough 3D printed fingertip feels and acts like human skin

Posted by in categories: 3D printing, cyborgs, robotics/AI

The researchers were inspired by actual skin. Researchers have been working on robot dexterity for several years now trying to give the machines human-like sensitivity. This has been no easy task as even the most advanced machines struggle with this concept.

Now the team is working on making the artificial fingertip as sensitive to fine detail as the real thing. Currently, the 3D-printed skin is thicker than real skin which may be hindering this process. As such, Lepora’s team is now working on 3D-printing structures on the microscopic scale of human skin.

“Our aim is to make artificial skin as good – or even better — than real skin,” concluded Professor Lepora. The end result could have many applications in soft robotics including in the Metaverse.

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Apr 7, 2022

DOD Building Largest 3D-Printed Structures in Western Hemisphere

Posted by in category: 3D printing

The Defense Department, in partnership with the private sector, is building three transient training barracks using advanced 3D printing technology.

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