Colloidal Route to Bio-inspired Hierarchical Superhydrophobic Substrates

Muhammad A. Raza* (Corresponding Author), Harold J.W. Zandvliet, Bene Poelsema, E. Stefan Kooij

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Inspired by biomaterials such as the Lotus leaf and rose petals, we present a facile, inexpensive bottom-up colloidal route to prepare superhydrophobic surfaces with hierarchical roughness. Spin coating is used to assemble silica microspheres into multilayered arrays, which are subsequently decorated with gold nanoparticles. The surface chemistry of the silica and gold is modified by adsorption of fluoroalkylsilane and dodecanethiol, respectively. The wetting properties, both static and dynamic, of surfaces in relation to the morphology of the substrates are addressed.

Original languageEnglish
Pages (from-to)5450-5454
Number of pages5
JournalMaterials Today: Proceedings
Volume2
Issue number10
DOIs
Publication statusPublished - 1 Jan 2015

Keywords

  • Gold nanoparticles
  • Silica
  • Superhydrophobic susbtrates
  • Wetting properties
  • Colloidal route

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