Shape-shifting structured lattices via multimaterial 4D printing.
J.W. Boley, W.M. van Rees, C. Lissandrello, M.N. Horenstein, R.L. Truby, A. Kotikian, J.A. Lewis, and L. Mahadevan, Proc. Natl. Acad.  Sci.,  116 (42) 20856-20862, 2019.

http://www.pnas.org/cgi/doi/10.1073/pnas.1908806116