3D 'painting' objects using lunar and Martian dust
13 April 2017
Northwestern Engineering researchers have demonstrated the ability to 3D print structures with simulants of Martian and lunar dust.
Ramille Shah and her Tissue Engineering and Additive Manufacturing (TEAM) Laboratory have been experimenting with novel 3D inks and printing method, using a term called “3D painting process”.
“For places like other planets and moons, where resources are limited, people would need to use what is available on that planet in order to live,” said Shah, assistant professor of materials science and engineering at Northwestern’s McCormick School of Engineering and of surgery in the Feinberg School of Medicine. “Our 3D paints really open up the ability to print different functional or structural objects to make habitats beyond Earth.”
Shah’s research uses NASA approved lunar and Martian dust simulants, which have similar compositions, particle shapes and sizes to the dusts found on lunar and Martian surfaces. Shah’s team created the lunar and Martian 3D paints using the respective dusts, a series of simple solvents, and biopolymer, then 3D printed them with a simple extrusion process. The resulting structures are over 90 percent dust by weight.
Despite being made of rigid micro-rocks, the resulting 3D painted material is flexible, elastic, and tough - similar to rubber. This is the first example of rubber-like or soft materials resulting from lunar and Martian simulant materials. The material can be cut, rolled, folded, and otherwise shaped after being 3D painted, if desired.
“We even 3D printed interlocking bricks, similar to Legos, that can be used as building blocks,” Shah said.
In the context of the broader 3D-painting technology, this work highlights the potential to use a single 3D printer on another planet to create structures from all kinds of materials.
Source: Northwestern University.