3D printing is usually realized by a material printer using digital technology. It is often used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products. Parts already printed with this technology.
This technology has been applied to jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automobile, aerospace, dentistry and medical industry, education, geographic information system, civil engineering, guns and other fields.
20 19 65438+ 10/4, the University of California, San Diego, for the first time, manufactured a spinal cord scaffold imitating the structure of the central nervous system, which successfully helped rats recover their motor function.
3D printing technology appeared in the mid-1990s.
Extended data
3D printing technology appeared in the mid-1990s, and it is actually the latest rapid prototyping equipment using light curing and paper lamination technology. Its working principle is basically the same as that of ordinary printers. The printer is full of "printing materials", such as liquid or powder. After connecting with the computer, the "printed materials" are superimposed layer by layer under the control of the computer, and finally the blueprint on the computer becomes a physical object. This printing technology is called 3D stereoscopic printing technology.
1986, American scientist Charles Hull developed the first commercial 3D printer.
1993, MIT obtained the patent of 3D printing technology.
1995, American ZCorp company obtained the exclusive authorization from Massachusetts Institute of Technology and began to develop 3D printers.
In 2005, Spectrum Z5 10, the first high-definition color 3D printer on the market, was successfully developed by ZCorp.
2010110/0 In October, Jim Kor's team created the world's first automobile Urbee printed by a 3D printer. ?
20 1 1 On June 6th, the world's first 3D printed bikini was released.
20 1 1 In July, British researchers developed the world's first 3D chocolate printer.
20 1 1 In August, 2008, engineers from Southampton University developed the world's first 3D printed airplane.
2012165438+10, Scottish scientists used human cells for the first time and printed artificial liver tissue with a 3D printer.
20 13, 10, a 3D printed artwork named "God of Xiao Ye" was successfully auctioned for the first time in the world.
2013165438+1October, SolidConcepts, a 3D printing company in Austin, Texas, USA, designed and manufactured a 3D printing metal pistol. ?
From August 1 2065438, 3D printed guns will be legal in the United States, and the design drawings of 3D printed pistols will be downloaded free of charge online.
20 18 12 10 Russian astronauts successfully printed out the thyroid gland of experimental mice in weightlessness by using the 3D biological printer on the International Space Station. ?
20 19 65438+ 10/4, University of California, San Diego published a paper in Nature and Medicine. For the first time, a spinal cord scaffold imitating the structure of the central nervous system was made by using fast 3D printing technology. After loading neural stem cells, they were implanted into the spinal column of rats with severe spinal cord injury, which successfully helped the rats recover their motor function.
The stent imitates the structural design of the central nervous system, is round and has a thickness of only two millimeters. The middle of the scaffold is H-shaped, and there are dozens of tiny channels with a diameter of about 200 microns around it, which are used to guide the implanted neural stem cells and axons to grow along the spinal cord injury site.