Todd H. Weisgraber

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About

Todd H. Weisgraber is a researcher at the intersection of materials science, mechanics, and additive manufacturing, with a focus on designing and fabricating architected materials—structures whose properties are defined by their geometry as much as their composition. His work is distinguished by its combination of computational design and experimental validation, often targeting unconventional or extreme behaviors. A major contribution is his pioneering approach to designing nonperiodic microarchitectured materials that achieve graded thermal expansions, a concept that allows a single lattice to expand differently in different regions without using multiple materials (16 citations). He has also advanced the understanding of bioinspired Bouligand structures—helically arranged layers that mimic natural armor—showing how silicone lattices with this architecture can exhibit exceptional compressive properties (12 citations). More recently, Weisgraber has developed novel fast-cure silicone inks for direct ink write 3D printing, enabling the single-step, support-free fabrication of tall, overhanging, and high-aspect-ratio structures previously impossible with conventional methods (2024). This work opens new possibilities for soft robotics, biomedical devices, and structural metamaterials, underscoring his role in pushing the boundaries of what can be designed and printed.