Structural changes in block copolymers: Coupling of electric field and mobile ions

Yoav Tsori, François Tournilhac, David Andelman, Ludwik Leibler

Research output: Contribution to journalArticlepeer-review

Abstract

An alternative mechanism explaining structural changes in polarized media such as diblock copolymers is proposed. The mechanism is based on the interaction of free charges with an external field rather than on the tendency to reduce dielectric interfaces perpendicular to the field. Calculation of the deformation of the bcc phase of diblock copolymers using the dielectric mechanism only, show that the critical field for transition to a hexagonal phase is Ec≈70 V/μm.

Original languageEnglish
Article number145504
Pages (from-to)145504/1-145504/4
JournalPhysical Review Letters
Volume90
Issue number14
StatePublished - 11 Apr 2003

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