Mechanisms of electric-field-induced alignment of block copolymer lamellae

Pinna, Marco and Schreier, Ludwig and Zvelindovsky, Andrei (2009) Mechanisms of electric-field-induced alignment of block copolymer lamellae. Soft Matter, 5 (5). pp. 970-973. ISSN 1744-683X

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Mechanisms of electric-field-induced alignment of block copolymer lamellae

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Abstract

We demonstrate that two mechanisms of lamellae reorientation observed experimentally under applied electric field [A. Böker H. Elbs, H. Hänsel, A. Knoll, S. Ludwigs, H. Zettl, V. Urban, V. Abetz, A. H. E. Müller and G. Krausch, Phys. Rev. Lett., 2002, 89, 135502] which have been previously described within dynamic self consistent field theory [ A. V. Zvelindovsky and G. J. A. Sevink, Phys. Rev. Lett., 2003, 90, 049601] can be fully explained within a much more simple model using the Ginzburg-Landau Hamiltonian. A third alignment mechanism has been identified which was not previously reported. A more complete picture of reorientation under electric field emerges that clarifies the crucial role of structural defects. © The Royal Society of Chemistry 2009.

Keywords:Block copolymers, Electric field effects, Polymers, Alignment mechanisms, Applied electric fields, Dynamic self-consistent field theories, Electric-field, Ginzburg-landau hamiltonians, Simple models, Structural defects, Alignment
Subjects:F Physical Sciences > F170 Physical Chemistry
Divisions:College of Science > School of Mathematics and Physics
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ID Code:14920
Deposited On:16 Sep 2014 11:41

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