Engineers at the University of Florida have pioneered a new 3D printing technique known as vapor-induced phase-separation 3D printing (VIPS-3D). This innovation allows for the creation of both single-material and multi-material objects in a more economical and sustainable manner.
Yong Huang, Ph.D., a professor in UF’s Department of Mechanical and Aerospace Engineering, highlighted the benefits of this method, which was detailed in the journal Nature Communications. “Our process is more cost-effective and simpler compared to current technologies,” Huang explained. “It’s an affordable solution for printing advanced materials, including metals.”
Understanding VIPS-3D Printing
The VIPS-3D process involves using special eco-friendly liquids to create the “ink” for the 3D printer. These polymer-based liquids, which can include metal or ceramic particles, solidify when a non-solvent vapor is introduced into the printing area. This solidification process, known as vapor-induced phase separation, leaves behind the solid material.
This method enables manufacturers to print multi-material parts with spatially tunable, multi-scale porosity. This means objects can have different substances at various locations with varying levels of porosity, useful for applications like porous medical implants and lightweight aerospace products.
Benefits and Applications
Marc Sole-Gras, Ph.D., the first author of the study and a former graduate student in Huang’s lab, emphasized the method’s potential. “For bone tissue engineering, we can print an implant with the right porosity to integrate with human cells,” he said.
The VIPS-3D process also requires less investment in infrastructure and uses sustainable materials and less energy, making it a greener alternative to traditional printing methods.
The technology, licensed by UF, has received two patents and was developed with funding from federal agencies, including the National Science Foundation and the Department of Energy.
This new method not only promises to make 3D printing more affordable and eco-friendly but also opens up new possibilities for advanced manufacturing in various industries.
