Nanostructure-Dependent Water-Droplet adhesiveness change in superhydrophobic anodic aluminum oxide surfaces: From highly adhesive to self-cleanable

Wonbae Lee, Bo Gi Park, Dae Hyun Kim, Dong Jun Ahn, Yongdoo Park, Sang Hoon Lee, Kyu Back Lee

Research output: Contribution to journalArticle

88 Citations (Scopus)

Abstract

Water-droplet adhesiveness was freely controlled on a single platform of superhydrophobic anodized aluminum oxide (AAO) within the range from highly adhesive to self-cleanable. Changing the structure from nanopore to nanopillar arrays at the surface caused a dramatic increase in the receding angle and a decrease in the hysteresis of water contact angles. The presence of dead-end nanopores but not through nanoholes was recognized as one of the main causes of the adhesiveness of superhydrophobic surfaces. The adhesiveness-controllable superhydrophobic AAO can be an excellent platform on which to elucidate the physical nature of the wetting phenomenon related to the nanostructure and has promising potential in technological applications.

Original languageEnglish
Pages (from-to)1412-1415
Number of pages4
JournalLangmuir
Volume26
Issue number3
DOIs
Publication statusPublished - 2010 Feb 2

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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