In pursuit of higher resolution and more realistic copying capabilities, 3D printing researchers have a better brain. Whether you believe it or not, now even your hair can be printed. Come check out these few god skills!
1. Massachusetts Institute of Technology
Artifact: Cilllia Software
Sect: light curing
Currently in 3D printing software design, the standard way of representing surface texture is to create an optical illusion by lofting a bitmap on a CAD model, which is not actually a 3D structure.
Researchers at the Massachusetts Institute of Technology recently introduced an interesting tool called Cilllia in a paper titled "Methods for Surface 3D Printing Microcolumn Structures." It allows the user to design and manufacture hair geometries that are less than 100 microns in size. Cilllia software quickly defines the angle, thickness, density and height of a hair.
They successfully verified on Autodesk's Ember DLP 3D printer . Using a photosensitive resin and an accuracy of 25 microns on the X/Y/Z axis, a thick and dense "brush" was created.
The researchers explained that this is a bottom-up 3D printing method that does not require defining a 3D printed layer that generates the hair structure layer by layer, but by designing a vertebral structure that is perpendicular to the surface or forms a certain slope. In order to avoid hair "one size fits all", each hair has a different height, thickness and contour.
2. Carnegie Mellon University
Artifact: "Furbrication" technology
Sect: FDM
Recently, researchers at Carnegie Mellon University in the United States used a technique called "Furbrication" to print a hairy troll doll, a horse model with a smooth tail, and a harder one. The brush and the first public display of these 3D printed hairs at the Engadget live event in Brooklyn, New York.
The researchers' inspiration comes from the hot glue gun that melts the plastic. People can extract the plastic wire from it. Is it used in 3D printing? They enter a set of parameters in the 3D printer, instructing them to first create a small spot of molten plastic, then drive the printhead away quickly, pulling a plastic filament from the molten plastic spot like a wire. Repeatedly, the hair will appear.
The researchers used a very common FDM 3D printer and cost only $300. Researchers plan to use more sophisticated materials for 3D printing filaments, such as ABS. However, although this technique can theoretically print wigs similar to human hair, its printing speed is very slow, and it usually takes about 20 to 25 minutes to produce hair of about 10 square millimeters.
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