MIT News  September 30, 2019 Shape-morphing structured materials have the ability to transform a range of applications. However, their design and fabrication remain challenging due to the difficulty of controlling the underlying metric tensor in space and time. A team of researchers in the US (MIT, Draper Laboratory, Boston University) exploited a combination of multiple materials, geometry and 4D printing to create structured heterogeneous lattices that overcome this problem. The printable ink’s elastic modulus and coefficient of thermal expansion can be precisely controlled. Multiplexed bilayer ribs were designed to control extrinsic curvature and enable wide range of 3-dimensional shape changes […]