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Compressible media can mitigate impulsive loads due to their ability to absorb energy and lower the intensity of an impulse by extending its duration. A variety of cellular materials are currently used to protect persons or structures from impulsive loads in automotive, sporting, and defense applications. While foams are the most common energy absorption materials in use today, emerging capability to fabricate well-defined, ordered lattice structures offers opportunity to create new energy absorption materials with previously unachieved properties.[1] We use a novel approach to fabricate microlattices with a range of architectures and truss diameters in the 0.05-> 5mm range.[2] Because the spatial configuration of voids and solid (referred to here as the cellular architecture) is not stochastic as in foams, microlattices offer much more control over their mechanical performance than other cellular materials. For example …