Wetting characteristics of 3-dimensional nanostructured fractal surfaces

Ethan Davis, Ying Liu, Lijia Jiang, Yongfeng Lu, Sidy Ndao

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

This article reports the fabrication and wetting characteristics of 3-dimensional nanostructured fractal surfaces (3DNFS). Three distinct 3DNFS surfaces, namely cubic, Romanesco broccoli, and sphereflake were fabricated using two-photon direct laser writing. Contact angle measurements were performed on the multiscale fractal surfaces to characterize their wetting properties. Average contact angles ranged from 66.8° for the smooth control surface to 0° for one of the fractal surfaces. The change in wetting behavior was attributed to modification of the interfacial surface properties due to the inclusion of 3-dimensional hierarchical fractal nanostructures. However, this behavior does not exactly obey existing surface wetting models in the literature. Potential applications for these types of surfaces in physical and biological sciences are also discussed.

Original languageEnglish (US)
Pages (from-to)929-935
Number of pages7
JournalApplied Surface Science
Volume392
DOIs
StatePublished - Jan 15 2017

Keywords

  • Fractal
  • Hierarchical
  • Two-photon photolithography
  • Wetting characteristics

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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