Optical phenomena and antifrosting property on biomimetics slippery fluid-infused antireflective films via layer-by-layer comparison with superhydrophobic and antireflective films

Kengo Manabe, Shingo Nishizawa, Kyu Hong Kyung, Seimei Shiratori

Research output: Contribution to journalArticle

95 Citations (Scopus)

Abstract

Sophisticated material interfaces generated by natural life forms such as lotus leaves and Nepenthes pitcher plants have exceptional abilities to resolve challenges in wide areas of industry and medicine. The nano- and microstructures inspired by these natural materials can repel various liquids and form self-cleaning coatings. In particular, slippery liquid-infused surfaces are receiving remarkable interest as transparent, nonfouling, and antifrosting synthetic surfaces for solar cells and optical devices. Here we focus on the transparency of lubricant-infused texture on antireflective films fabricated by layer-by-layer self-assembly that decrease light scattering, which is important to maintain device properties. A slippery fluid-infused antireflective film composed of chitin nanofibers less than 50 nm in diameter prevented light scattering at the long-wavelength side by Rayleigh scattering to achieve 97.2% transmittance. Moreover, films composed of the same materials demonstrated three different morphologies: superhydrophilicity with antireflection, superhydrophobicity, and omniphobicity, mimicking the biological structures of moth eyes, lotus leaves, and pitcher plants, respectively. The effect of thermal changes on the ability of each film to prevent frost formation was investigated. The slippery fluid-infused antireflective film showed effective antifrosting behavior.

Original languageEnglish
Pages (from-to)13985-13993
Number of pages9
JournalACS Applied Materials and Interfaces
Volume6
Issue number16
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • antifrosting
  • antireflective film
  • biomimetics
  • layer-by-layer
  • superoleophobic surfaces
  • surface wettability
  • thermal change

ASJC Scopus subject areas

  • Materials Science(all)

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