Fluid-Mediated Fabrication of Complex Assemblies

Research output: Contribution to journalReview articlepeer-review

Abstract

This Perspective accounts for recent progress in the directed control of interfacial fluid flows harnessed to assemble architected soft materials. We are focusing on the paradigmatic problem of free-surface flows in curable elastomers. These elastomers are initially liquid and cure into elastic solids whose shape is imparted by concomitant and competing phenomena: flow-induced deformations and curing. Particular attention is given to the role of capillary forces in these systems. Originating from the cohesive nature of liquids and thus favoring smooth interfaces, capillary forces can also promote the destabilization of interfaces, e.g., into droplets. In turn, such mechanical instabilities tend to grow into regular patterns, e.g., forming hexagonal lattices. We discuss how the universality, robustness, and ultimate regularity of these out-of-equilibrium processes could serve as a basis for new fabrication paradigms, where instabilities are directed to generate target architected solids obtained without each element laid in place by direct mechanized intervention.

Original languageEnglish (US)
Pages (from-to)2417-2425
Number of pages9
JournalJournal of the American Chemical Society
Volume2
Issue number11
DOIs
StatePublished - Nov 28 2022

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Keywords

  • 3D printing
  • capillarity
  • curing
  • instability
  • interfacial flows
  • pattern
  • polymer

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