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3D Printer Uses Different Wavelengths to Print with Multimaterials

3D Printer Uses Different Wavelengths to Print with Multimaterials

Written by David

March 18, 2019

To position various materials for the printing process, most multimaterial 3D-printing methods use separate reservoirs for the different materials. For this printer, the researchers chose to take a one-vat, multiple-component approach. They used digital light processing additive manufacturing (DLP-AM) to control chemical composition along all three axes of the printed object by simultaneously projecting more than one light source into a vat of photoresin. T he top images show the digital design and its printed form. Purple corresponds to ultraviolet-cured stiff epoxide regions, whereas the gray regions are visible-light-cured acrylate regions that are soft and compliant. At the bottom, the logo for the 3D-printing group, MASC, is turned into a printed object composed of both stiff, opaque regions and soft, transparent regions. Courtesy of A.J. Boydston and Johanna Schwartz. Using different wavelengths of light, the researchers controlled which starting materials (monomers) were polymerized into different sections of the printed […]

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