Biomimetic silicification of 3D polyamine-rich scaffolds assembled by direct ink writing.
basic_science · Level V
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- Record sourced from PubMed, PMID 32646146.
- Also identified by DOI 10.1039/b517278k.
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Abstract
We report a method for creating synthetic diatom frustules the biomimetic silicification of polyamine-rich scaffolds assembled by direct ink writing (DIW) [G. M. Gratson, M. Xu and J. A. Lewis, , 2004, , 386, ]. A concentrated polyamine-rich ink is robotically deposited in a complex 3D pattern that mimics the shape of naturally occurring diatom frustules, Ehrenberg (triangular-shaped) and (web-shaped). Upon exposing these scaffolds to silicic acid under ambient conditions, silica formation occurs in a shape-preserving fashion. Our method yields 3D inorganic-organic hybrids structures that may find potential application as templates for photonic materials, novel membranes, or catalyst supports.