Biomimetic silicification of 3D polyamine-rich scaffolds assembled by direct ink writing

Mingjie Xu, Gregory M. Gratson, Eric B. Duoss, Robert F. Shepherd, Jennifer A. Lewis

Research output: Contribution to journalArticle

Abstract

We report a method for creating synthetic diatom frustules via the biomimetic silicification of polyamine-rich scaffolds assembled by direct ink writing (DIW) [G. M. Gratson, M. Xu and J. A. Lewis, Nature, 2004, 428, 386, ref. 1]. A concentrated polyamine-rich ink is robotically deposited in a complex 3D pattern that mimics the shape of naturally occurring diatom frustules, Triceratium favus Ehrenberg (triangular-shaped) and Arachnoidiscus ehrenbergii (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.

Original languageEnglish (US)
Pages (from-to)205-209
Number of pages5
JournalSoft Matter
Volume2
Issue number3
DOIs
StatePublished - Mar 2 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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    Xu, M., Gratson, G. M., Duoss, E. B., Shepherd, R. F., & Lewis, J. A. (2006). Biomimetic silicification of 3D polyamine-rich scaffolds assembled by direct ink writing. Soft Matter, 2(3), 205-209. https://doi.org/10.1039/b517278k