In Situ observation of meniscus shape deformation with colloidal stripe pattern formation in convective self-assembly

Yasushi Mino, Satoshi Watanabe, Minoru T. Miyahara

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Vertical convective self-assembly is capable of fabricating stripe-patterned structures of colloidal particles with well-ordered periodicity. To unveil the mechanism of the stripe pattern formation, in the present study, we focus on the meniscus shape and conduct in situ observations of shape deformation associated with particulate line evolution. The results reveal that the meniscus is elongated downward in a concave fashion toward the substrate in accordance with solvent evaporation, while the concave deformation is accelerated by solvent flow, resulting in the rupture of the liquid film at the thinnest point of the meniscus. The meniscus rupture triggers the meniscus to slide off from the particulate line, followed by the propagation of the sliding motion of the three-phase contact line, resulting in the formation of stripe spacing.

Original languageEnglish
Pages (from-to)4121-4128
Number of pages8
JournalLangmuir
Volume31
Issue number14
DOIs
Publication statusPublished - Apr 14 2015
Externally publishedYes

ASJC Scopus subject areas

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

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