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Architected Polymer Foams via Direct Bubble Writing
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Claas Willem Visser, Jennifer A. Lewis, and co-workers describe the fabrication of architechted 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.