Hexagonal phase ordering in strongly segregated copolymer films

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Strongly segregated copolymer mixtures with uneven composition ratio can form hexagonally ordered thin films. A simplified model describing the size and position of micellelike clusters is derived, allowing for investigation of much larger domain sizes than in previous studies. Simulations of this model are performed to study the generation of large scale order and evolution of pattern defects. We find three temporal regimes exhibiting different scaling laws for orientational correlation length and defect number. In the early stage, topological defects are rapidly eliminated by pairwise annihilation. A slower intermediate stage is characterized by the migration of grain boundaries and the elimination of small grains. In the final stage, grain boundaries become pinned and the evolution halts. A scaling law for defect interaction is proposed which is consistent with the crossover between the first and second stages.

Original languageEnglish (US)
Article number042602
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume92
Issue number4
DOIs
StatePublished - Oct 8 2015

Fingerprint

Copolymer
Hexagon
copolymers
Defects
Grain Boundary
Scaling Laws
defects
scaling laws
Topological Defects
grain boundaries
Correlation Length
Annihilation
Migration
Crossover
Elimination
Thin Films
Pairwise
elimination
crossovers
Interaction

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

Hexagonal phase ordering in strongly segregated copolymer films. / Glasner, Karl B.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 92, No. 4, 042602, 08.10.2015.

Research output: Contribution to journalArticle

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