Flow-induced stripe pattern formation in phase-separating fluids

Masato Yamamura, Shoko Nakamura, Toshihisa Kajiwara, Hiroyuki Kage, Kitaro Adachi

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

We demonstrated that the introduction of a temperature gradient along the free surface induces a particular stripe pattern in phase-separating fluids. The horizontal temperature gradient drove lateral-periodic spiral liquid motion flowing from warmer to cooler places due to thermocapillarity. Properly chosen polymer compositions and initial film thicknesses in ternary solutions allowed us to promote a phase separation in the presence of spiral flow, which assembled the demixed polymer droplets along the flow-stagnation lines. The resulting assembled phases aligned in the temperature gradient direction and eventually formed periodic polymer stripes involving the same spacing as that of the flow axis. The critical condition for the stripe pattern formation was given by the ratio of two relevant film thicknesses, i.e. the thickness for the onset of the phase separation and that for the cessation of liquid motion.

本文言語英語
ページ(範囲)4699-4704
ページ数6
ジャーナルpolymer
44
16
DOI
出版ステータス出版済み - 7 10 2003
外部発表はい

All Science Journal Classification (ASJC) codes

  • 有機化学
  • ポリマーおよびプラスチック
  • 材料化学

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