Gregory M. Gratson

Papers

Total Citations

465

H-Index

About

Gregory M. Gratson is a pioneer in the directed assembly of complex three-dimensional microstructures, with his work bridging colloidal science, materials engineering, and biomimetic design. His most influential contribution, the 2002 paper "Directed Colloidal Assembly of 3D Periodic Structures" (390 citations), introduced a revolutionary method for robotically depositing colloidal inks—silica microspheres with precisely tailored attractive interactions—to create 3D periodic lattices. This work demonstrated that ordered structures with periodicity far exceeding the size of individual building blocks could be fabricated, opening new pathways for photonic crystals and advanced metamaterials. Gratson further advanced the field with his 2006 study on "Biomimetic silicification of 3D polyamine-rich scaffolds assembled by direct ink writing" (75 citations), where he combined direct ink writing with bio-inspired chemistry to replicate the intricate silica structures of diatom frustules. By robotically depositing concentrated polyamine-rich inks and then silicifying them, he created synthetic analogues of these natural marvels. Gratson’s research, conducted alongside collaborators like Jennifer A. Lewis, has been instrumental in establishing direct ink writing as a versatile platform for hierarchical materials design, with lasting impact on additive manufacturing and bioinspired materials science.