Kinetic pathways of sphere-to-cylinder transition in diblock copolymer melt under electric field

Ly, D. Q. and Pinna, Marco and Honda, T. and Kawakatsu, T. and Zvelindovsky, Andrei (2013) Kinetic pathways of sphere-to-cylinder transition in diblock copolymer melt under electric field. Journal of Chemical Physics, 138 (7). ISSN 0021-9606

Full content URL: http://scitation.aip.org/content/aip/journal/jcp/1...

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Item Type:Article
Item Status:Live Archive

Abstract

Phase transition from body-centered-cubic spheres to cylinders in a diblock copolymer melt under an external electric field is investigated by means of real-space dynamical self-consistent field theory. Different phase transition kinetic pathways and different cylindrical domains arrangements of the final phase are observed depending on the strength and direction of the applied electric field. Various transient states have been identified depending on the electric field being applied along 111, 100, and 110 directions. The electric field should be above a certain threshold value in order the transition to occur. A "dynamic critical exponent" of the transition is found to be about 3/2, consistent with other order-order transitions in diblock copolymers under electric field. © 2013 American Institute of Physics.

Keywords:110 direction, Body-centered cubic, Cylindrical domain, Diblock copolymer melts, Dynamic critical exponents, External electric field, Kinetic pathway, Order-order transitions, Phase transition kinetics, Real-space, Self consistent field theory, Transient state, Block copolymers, Cylinders (shapes), Mean field theory, Molecular orbitals, Electric fields
Subjects:F Physical Sciences > F320 Chemical Physics
Divisions:College of Science > School of Mathematics and Physics
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ID Code:14909
Deposited On:16 Sep 2014 09:50

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