Colloidal stripe pattern with controlled periodicity by convective self-assembly with liquid-level manipulation

Yasushi Mino, Satoshi Watanabe, Minoru T. Miyahara

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We describe a template-free technique for arranging colloidal particles into a stripe pattern on a large scale. A simple liquid-level manipulation system was incorporated into the vertical-deposition convective self-assembly (CSA) technique. By periodically pumping a colloidal dispersion out of or into a reservoir to manipulate the liquid level, we successfully fabricated stripe patterns with various periodicities (i.e., line widths and spacings) that are unachievable with the normal CSA technique. We developed a simple model to predict the periodicity of the resultant colloidal stripes that enables the tailored fabrication of colloidal stripes with the desirable periodicity for a practical application. This technique has the advantages of versatility and scalability. By combining this technique with the two-step CSA technique (Mino et al., Langmuir2011, 27(9), 5290-5295), we fabricated a large-sized colloidal grid network pattern of silver nanoparticles.

Original languageEnglish
Pages (from-to)3184-3190
Number of pages7
JournalACS Applied Materials and Interfaces
Volume4
Issue number6
DOIs
Publication statusPublished - Jun 27 2012
Externally publishedYes

Keywords

  • colloid
  • convective self-assembly
  • self-organization
  • stripe pattern
  • template-free technique
  • vertical deposition

ASJC Scopus subject areas

  • Materials Science(all)

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