Polymer Foams: Architected Polymer Foams via Direct Bubble Writing (Adv. Mater. 46/2019)

In article number 1904668, Claas Willem Visser, Jennifer A. Lewis, and co-workers describe the fabrication of architected polymer foams by “direct bubble writing”. In this process, bubbles are ejected into air, deposited onto a substrate, and then photopolymerized with UV light, and open- and closed-cell foams with locally graded densities can be printed into 3D objects such as 3D lattices, shells, and out-of-plane pillars. Image credit: C. Visser, J. Mueller, D. Amato, and J.A. Lewis, Harvard University.