Smithsonian
http://www.smithsonianmag.com/innovation/print-then-heat-self-assembling-space-…

Georgia Tech engineers Glaucio Paulino and Jerry Qi wanted to apply tensional advantages to objects that could be used for more than just bridges and antennae, such as space habitats or heart stents. Paulino and Qi devised a method to create 3D printable, lightweight, foldable versions of these designs, with tubes made of a plastic-like material called a shape memory polymer connected with printed elastic tendons.