How to grow a movable mini-garden in a droplet: Growing chemical gardens in a water and aqueous ethanol solutions droplets deposited on a superhydrophobic surface

Edward Bormashenko, Yelena Bormashenko, Roman Grynyov, Roman Pogreb, A. Schechter

Research output: Contribution to journalArticlepeer-review

Abstract

Growth of chemical droplets confined by a droplet placed on a superhydrophobic surface is demonstrated. FeCl3 seed crystals were deposited on a polymer superhydrophobic surface. Droplets containing an aqueous solution of the potassium hexacyanoferrate (K4Fe(CN)6·3H2O) were allowed to contact the seed crystals. Typical small-scale chemical gardens, similar to those grown in open vessels, were observed within 20μl droplets. Micrometrically scaled filaments were registered. The Laplace overpressure developed in the droplet was insufficient for suppressing the growth of chemical gardens. Addition of ethanol delayed the growth of chemical gardens.

Original languageEnglish
Pages (from-to)12-15
Number of pages4
JournalColloids and Interface Science Communications
Volume7
DOIs
StatePublished - 1 Jul 2015

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry
  • Materials Chemistry

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