Scientists at Stanford University in the United States have developed a new high-speed micro-scale 3D printing technology - roll-to-roll continuous liquid interface production (r2rCLIP), which can print 1 million extremely fine and customizable micro-particles per day. This achievement is expected to promote the development of biomedicine and other fields. The relevant paper was published in the latest issue of "Nature" on the 13th.
Microparticles produced by 3D printing technology are widely used in fields such as drug and vaccine delivery, microelectronics, microfluidics, and complex manufacturing. However, mass customization of such particles is extremely challenging.
r2rCLIP is based on the continuous liquid interface production (CLIP) printing technology developed by Stanford University's DiSimone Laboratory in 2015. CLIP uses ultraviolet light to solidify the resin quickly into the desired shape.
The leader of the latest research, Jason Kronenfeld of the Disimone Laboratory, explained that they first fed a piece of film into a CLIP printer. At the printer, hundreds of shapes are simultaneously printed onto the film; the system then proceeds to clean, cure, and remove the shapes, all of which can be customized to the desired shape and material; finally, the film is rolled up. The entire process, hence the name roll-to-roll CLIP, enables mass production of uniquely shaped particles smaller than the width of a human hair.
Researchers said that before the advent of r2rCLIP, if you wanted to print a batch of large particles, you needed to process it manually, and the process progressed slowly. Now, r2rCLIP can produce up to 1 million particles per day at unprecedented speeds. With new technologies, they can now quickly create microparticles with more complex shapes using a variety of materials, such as ceramics and hydrogels, to create hard and soft particles. The hard particles can be used in microelectronics manufacturing, while the soft particles can be used in drug delivery within the body.
The research team pointed out that existing 3D printing technology needs to find a balance between resolution and speed. Some 3D printing technologies can produce smaller nanoscale particles but at a slower speed; some 3D printing technologies can mass-produce large items such as shoes, household items, machine parts, football helmets, dentures, hearing aids, etc., but cannot print them. Fine microparticles. The new method finds a balance between manufacturing speed and fine scale.
Titanium powder is widely used and critical in 3D printing technology. As a high-quality strategic metal material, the characteristics of titanium alloy which are lightweight, high strength, corrosion resistance, etc., making it an indispensable material in aircraft manufacturing, aerospace, and other industries. At the same time, titanium alloy powder is also widely used in the manufacturing of aerospace, medical implants and high-performance sports equipment due to its unique properties.
Through 3D printing technology, titanium alloy powder can be accumulated layer by layer to form objects with the desired shape and function. The application of this technology has become more and more widespread in machinery manufacturing, aerospace, military, etc. With the rapid development of technology, its application fields will continue to expand.
Aerospace field: Titanium alloy powder is widely used in the manufacturing of key components of aircraft, rockets and other aerospace vehicles due to its high strength, low density and good corrosion resistance. Through 3D printing technology, parts with complex shapes and superior performance can be manufactured to improve the performance and safety of aerospace vehicles.
Medical field: In the medical field, titanium alloy powder is used to manufacture medical implants, such as artificial joints and dental implants. 3D printing technology can customize personalized implants according to patient's specific needs, improving surgical results and patients' quality of life.
Other fields: Titanium alloy powder is also widely used in high-performance sports equipment, automobile manufacturing, and other fields. Through 3D printing technology, products with excellent performance can be manufactured to meet various special needs.
It should be noted that although titanium powder has broad application prospects in 3D printing technology, preparing high-quality titanium alloy powder and meeting the requirements of 3D printing is still a technical problem. At present, thae more mature 3D printing titanium alloy powder preparation technologies include the plasma rotating electrode method, plasma wire, and gas atomization method. In the future, the application of titanium powder in 3D printing technology will become more extensive and in-depth.
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