Target Patterns in Phase Separation Induced by Cross-Linking

Miho Motoyama, Yoshihiro Yamazaki, Takao Ohta

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We introduce a quite simple model for a phase-separating binary mixture where one of the components is cross-linked. It is shown by computer simulations that target patterns are generated. We use a Cahn-Hilliard equation with a bulk free energy density which varies as a molecular weight changes with time. Target patterns are obtained in the following way. We first quench the system, having an off-critical composition, into a spinodal region, and find that disconnected droplets emerge in the system. With cross-linking one of the components, the phase diagram of the system shifts to a location where a bicontinuous structure is formed. As a result, target patterns grow from the droplets without any additional nuclei.

本文言語English
ページ(範囲)729-732
ページ数4
ジャーナルjournal of the physical society of japan
70
3
DOI
出版ステータスPublished - 2001 3 1
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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