Multicolour micropatterning of thin films of dry gels

Rafal Klajn, Margin Fialkowski, Igort T. Bensemann, Agnieszka Bitner, C. J. Campbell, Kyle Bishop, Stoyan Smoukov, Bartosz A. Grzybowski

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)


An experimental method based on reaction-diffusion phenomena that allows for simultaneous micropatterning of a substrate with several colored chemicals was described. A theoretical model was developed that identifies key parameters controlling color-separation, and guides the selection of chemicals appropriate for color micropatterning. It was observed that when the raised features of the stamp were brought into conformal contact with the surface of the dry film, salt solutions diffuses and reacts in a gelatin matrix. It was suggested that experimentally observed color separation cannot be reproduced by theoretical models that do not account for the finite numbers of cations being delivered to the gelatin.

Original languageEnglish
Pages (from-to)729-735
Number of pages7
JournalNature materials
Issue number10
Publication statusPublished - Oct 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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