Abstract: A shape-stable structure that is configured to provide ablative cooling. The structure is used to form a component that includes shape-stable bulk structure and an ablative material. The bulk structure is infiltrated with the ablative material so that the ablative material is disposed in pathways defined by the bulk structure.

Abstract: A composition includes a plurality of microparticles, where the microparticles comprise agglomerates of nanopowder, wherein the nanopowder includes a material selected from the following: a ceramic material, a metal, an alloy, a polymer, or a combination thereof. The microparticles are characterized by having an essentially spherical shape, nanograin features substantially identical to nanograin features of the nanopowder prior to formation into the microparticles, and a nanoscale porosity defined by the nanograin features. The plurality of microparticles have an essentially uniform size relative to one another. Moreover, the composition has flowability having a Hausner Ratio representing tapped density:bulk density less than 1.25.

Abstract: The present disclosure relates to an engineered, additively manufactured, microfluidic cellular structure formed from a plurality of cells, wherein the cells are each formed from a plurality of interconnected elements. The cells have voids and each cell is open at upper ends thereof. The cells each communicate at a point below its upper end with a common channel. The cells are each configured to accept a fluid and operate to channel the fluid into the common channel and to hold the fluid received therein for later selective withdrawal from the structure.