Ultra-water-repellent surface: Fabrication of complicated structure of SiO 2 nanoparticles by electrostatic self-assembled films

Takuji Soeno, Kohei Inokuchi, Seimei Shiratori

研究成果: Article査読

57 被引用数 (Scopus)

抄録

Ultra-water-repellent surface requires a high surface roughness and low surface energy. We designed surface complicated microstructure of SiO 2 nanoparticles by using electrostatic self-assembly process. The films that were prepared by the alternate adsorption of poly(allylamine hydrochloride), SiO 2 nanoparticles mixture solution and poly(acrylic acid) on the substrates were very complicated in surface structure. After surface hydrophobic treatment by dichlorodimethylsilane, the film surface showed a contact angle of larger than 160° for water droplets. The value was much larger compared with the contact angle on silicon wafer treated by dichlorodimethylsilane. The difference was strongly dependent on the surface structure. In this paper, we changed deposition conditions to fabricate the water-repellent surfaces with various surface structures by using three types of silica nanoparticles, and we found that the nanoscale structure was very important for the ultra-water-repellency.

本文言語English
ページ(範囲)539-543
ページ数5
ジャーナルApplied Surface Science
237
1-4
DOI
出版ステータスPublished - 2004 10月 15

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 物理学および天文学(全般)
  • 表面および界面
  • 表面、皮膜および薄膜

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