Stability of a block-copolymer lamella in a strong electric field

Using self-consistent field theory, we examine the stability of a lamellar layer of diblock copolymer subject to strong orthogonal electric fields. Two competing instabilities are identified; one is a peristaltic mode that leads to perpendicular lamellae, and the other is an undulatory mode that res...

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Bibliographic Details
Published inPhysical review letters Vol. 95; no. 25; p. 258302
Main Author Matsen, M W
Format Journal Article
LanguageEnglish
Published United States 16.12.2005
Subjects
Computer Simulation
Dose-Response Relationship, Radiation
Electromagnetic Fields
Kinetics
Models, Chemical
Models, Molecular
Molecular Conformation - radiation effects
Polymers - chemistry
Polymers - radiation effects
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Summary:Using self-consistent field theory, we examine the stability of a lamellar layer of diblock copolymer subject to strong orthogonal electric fields. Two competing instabilities are identified; one is a peristaltic mode that leads to perpendicular lamellae, and the other is an undulatory mode that results in the formation of an undesirable grain boundary. The former kinetic pathway is favored when the central domain is relatively thin and composed of the low-dielectric material.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.95.258302