Fig. 2: Morphological structure and mechanical properties of the metal 3D-printed traditional microlattices and wood-inspired metamaterials.
From: Wood-inspired metamaterial catalyst for robust and high-throughput water purification
a Optical image of original 3D-printed traditional microlattices and wood-inspired metamaterials. b The 3D-printed metamaterials with 0.40 mm diameter and 0, 30, 50, and 70% overlap rates. c The relative density and surface area per volume of traditional microlattices and wood-inspired metamaterials. The insert schematic shows the definition of overlap rate. Comparison of the micro-CT-reconstructed and CAD models of d traditional microlattices and f wood-inspired metamaterials. The SEM morphology of e traditional microlattices and g wood-inspired metamaterials. h Distributions of surface deviations. The D-values (D10, D50, and D90) indicate the intercepts for 10, 50, and 90% of the cumulative percentage. i The microstructure of Co on the 3D-printed 316 L microlattices. j Stress–strain curves of 3D-printed traditional microlattices and wood-inspired metamaterials with different overlap rates under compression perpendicular to the overlap direction. k Contour map of normalized Young’s modulus under different overlap rates and strut diameters for the wood-inspired metamaterial. l The localized equivalent stress distribution comparison between traditional microlattice and wood-inspired metamaterial with a 30% overlap rate. The material properties of SLM-fabricated 316 L SS for the compression simulation are shown in Supplementary Fig. 13. The top plate only was allowed to move along the z-axis while the bottom plate was fixed in all directions. Fig. 2c, h, j–i are provided as a Source Data file.
