Kinetic pathway of gyroid-to-cylinder transition in diblock copolymer melt under an electric field

Dung Q. Ly, Takashi Honda, Toshihiro Kawakatsu, Andrei V. Zvelindovsky

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Gyroid-to-cylinder transition in a diblock copolymer melt under an electric field is studied by real-space dynamical self-consistent-field theory. Starting from an equilibrium gyroid structure, we apply an electric field along [111], [ 11̄d], and [112̄] directions of the conventional unit cell of the gyroid structure. Under sufficiently high value of the electric field, an epitaxial transition to cylinders occurs. Contrary to the case of a similar transition under the shear flow, we observe 5-fold connections as intermediates in the transition. We found a critical behavior of the lifetime of the initial gyroid structure, which can be accounted for using the mean-field argument. Numerically obtained scattering function explains the unclarified intermediates experimentally observed in the thermal relaxation of a sheared gyroid.

Original languageEnglish
Pages (from-to)2928-2935
Number of pages8
JournalMacromolecules
Volume40
Issue number8
DOIs
Publication statusPublished - 2007 Apr 17

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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