Superhydrophobic and lipophobic properties of self-organized honeycomb and pincushion structures

Hiroshi Yabu, Masafumi Takebayashi, Masaru Tanaka, Masatsugu Shimomura

Research output: Contribution to journalArticle

351 Citations (Scopus)

Abstract

This report describes the simple preparation of superhydrophobic and lipophobic surfaces by self-organization. Microporous polymer films of a fluorinated polymer with hexagonally arranged pores were prepared by casting from solution under humid conditions. Hexagonally packed water microdroplets were formed by evaporative cooling on the surface of the casting solution. After solvent evaporation, a honeycomb-patterned polymer film was formed with the water droplet array acting as a template; the water droplets themselves evaporated soon after the solvent. Two porous polymer layers were stacked vertically, separated by pillars at the hexagon vertexes. After peeling off the top layer using adhesive tape, a pincushion-like structure was obtained. Here, we show that superhydrophobic behavior was achieved, with the maximum contact angle, 170°, observed using these pincushion structures. Theoretical calculations fit the experimental results well. The lipophobic properties of the films are also discussed.

Original languageEnglish
Pages (from-to)3235-3237
Number of pages3
JournalLangmuir
Volume21
Issue number8
DOIs
Publication statusPublished - Apr 12 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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