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Barriers terminal walls box - Barriere terminali muretto box
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Marvel legends Red Hood Mask Head Battle damaged
€12.15 -10% €10.93
Adult Red Dragon
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Pokemon Figurine
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Max Verstappen Keychain
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Farah Karim Operator Mask - Call of Duty - Modern Warfare 2 - WARZONE - STL model 3D print file
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KeyChain KeyChain Community of Madrid
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Blue // Rainbow Friends
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Red Hood Gotham Knight Metal Helmet for 3D Printing
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Red Hood Gotham Knight Shinobi Helmet for 3D Printing
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Turning Red cutcookies
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80
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3d Print Red Hood - Etsy.de
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3D Fiber Printer Red 3mm ABS 0.
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Harvard engineers develop true 3D printing technology
News April 23, 2022
Further
Alexander Sheremetiev news editor
Alexander Sheremetiev news editor
Researchers have developed a 3D printing technique that goes beyond the traditional layered bottom-up approach and eliminates the need for support structures.
Description published in the journal Nature.
Read Hi-Tech in
A team of researchers led by scientists from the Rowland Institute at Harvard University has developed a new 3D printing technology. The engineers used a method of converting red light to blue and adding a photosensitive liquid to a resin used in 3D printers.
In traditional 3D printing, resin solidifies in a flat and straight line along the path of light. In their work, the researchers add nanocapsules containing special chemicals to the resin so that the resin reacts only to a certain type of light - blue light at the focus of the laser. Such a beam is formed in the process of frequency upconversion. The beam travels in three dimensions, so it doesn't need layering. As the researchers note, the resulting resin has a higher viscosity than the traditional method, so after printing it can stand without support.
“We designed the resin, we designed the system so that the red light doesn't do anything,” says Daniel Congreve, co-author of the study.
“But a small dot of blue light triggers a chemical reaction that causes the resin to harden and turn into plastic. What this basically means is that you have a laser going through the whole system and only in that little blue do you get polymerization, [and only there] do you get printing. We just scan that blue dot in three dimensions, and wherever that blue dot hits, it polymerizes and you get 3D printing.”
The researchers demonstrated their printer and created 3D Harvard and Stanford logos and a small boat. This is a standard test for 3D printers: the small size of the boat and many small details, such as overhanging windows and open spaces in the cabin, create a challenge.
The authors of the development believe that the technology can seriously change 3D printing. Traditional layering requires the use of props for overhanging elements to keep the resin from sinking and dripping down. Refusal of such structures will significantly speed up the process.
