Sol-gel inks for direct-write assembly of functional oxides

Eric B. Duoss, Mariusz Twardowski, Jennifer A. Lewis

Research output: Contribution to journalArticlepeer-review


A study was conducted to develop a range of sol-gel inks that enable the direct ink writing (DIW) of functional oxides at the microscale level. The ink viscosity for DIW was developed through micro-sized nozzles, by regulating the solids content. An approximation of the Hagen-Poiseuille model was used to estimate the range of ink viscosity. The ink filaments were calcined at high temperature conditions, to produce the desired functional oxide phases. 3D micro-periodic structures composed of parallel arrays of orthogonally stacked rods were also produced, to demonstrate that DIW assembly of sol-gel inks creates a new potential for functional devices. It was observed that the sacrificial layer melted, allowing the patterned 3D structure to first release from the underlying surface, before shrinking isotropically during calcination.

Original languageEnglish (US)
Pages (from-to)3485-3489
Number of pages5
JournalAdvanced Materials
Issue number21
StatePublished - Nov 5 2007

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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