Columbia University

3D Printing with laser inversion

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According to  Hod Lipson, James and Sally Scapa Professor of Innovation and his Ph.D. student John Whitehead, from Columbia University in the City of New York, “in a standard printer, because each of the successive layers placed down are homogeneous, the unfused material obscures your view of the object being printed, until you remove the finished part at the end of the cycle. Think about excavation and how you can’t be sure the fossil is intact until you completely remove it from the surrounding dirt. This means that a print failure won’t necessarily be found until the print is completed, wasting time and money.”

Laser Inversion Enables Multi-Materials 3D Printing

Color-Changing 3D Printables

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Researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL). according to Stefanie Mueller, she is the X-Consortium Career Development Assistant Professor in the departments of Electrical Engineering and Computer Science and Mechanical Engineering,” Largely speaking, people are consuming a lot more now than 20 years ago, and they’re creating a lot of waste and by changing an object’s color, you don’t have to create a whole new object every time.”
“Appearance adaptivity, in general, is always a superior feature to have, and we’ve seen many other kinds of adaptivity enabled with manufactured objects,” says Changxi Zheng, an associate professor at Columbia University who co-directs Columbia’s Computer Graphics Group.
“This work is a true breakthrough in being able to change the color of objects without repainting them.”:)