Fabrication of colloidal grid network by two-step convective self-assembly

Yasushi Mino, Satoshi Watanabe, Minoru T. Miyahara

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We explored a "template-free" approach to arranging colloidal particles into a network pattern by a convective self-assembly technique. In this approach, which we call "two-step convective self-assembly," a stripe pattern of colloidal particles is first prepared on a substrate by immersing it in a suspension. The substrate with the stripes is then rotated by 90° and again immersed in the suspension to produce stripes perpendicular to the first ones, resulting in a grid-pattern network of colloidal arrays. The width of the colloidal grid lines can be controlled by changing the particle concentration while maintaining an almost constant spacing between the lines. On the basis of these results, we propose a mechanism for grid pattern formation. Our method is applicable to various types of particles. In addition, the wide applicability of this method was employed to create a hybrid grid pattern.

Original languageEnglish
Pages (from-to)5290-5295
Number of pages6
JournalLangmuir
Volume27
Issue number9
DOIs
Publication statusPublished - May 3 2011
Externally publishedYes

ASJC Scopus subject areas

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

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