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Materials with significant porosity, generally termed cellular solids, exhibit unique properties unachievable by their solid counterparts. These characteristics, which may include ultra-low density, high surface area per unit volume, and/or improved impact absorption, are greatly influenced by both the degree of open porosity and the physical arrangement of the solid material within the cellular structure. Ordered cellular structures generally exhibit superior stiffness and peak strength relative to random cellular configurations by changing the mode of deformation within the microstructure during elastic loading.[1, 2] Two-dimensionally ordered cellular structures are relatively common, such as honeycomb, but opencellular structures with order in three dimensions are rare because of the difficultly of fabricating such structures. Innovative scalable techniques have been developed to fabricate open-cellular materials with …