An article by Subramanian Sundaram, David S. Kim, Marc A Baldo, Ryan C. Hayward and Wojciech Matusik was published in ACS Appl. Mater. Interfaces.
After being peeled from the platform of a three-dimensional printer, a flat electronic component begins to fold its four legs into position. In just a few minutes, it is fully formed and can stand. Researchers can now print self-folding electronic devices like this one thanks to a new polymer ink that builds up mechanical strain during the 3-D-printing process.