Berlin 2012 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 29: Crystallisation, Nucleation and Self assembly
CPP 29.8: Talk
Wednesday, March 28, 2012, 17:30–17:45, C 243
Influence of electric fields on the self assembly of block copolymers in confined geometries. — •Ulrich Welling1, Hagai Shalev2, Yoav Tsori2, and Marcus Müller1 — 1Institut für theoretische Physik, Friedrich-Hund-Platz 1, 37077 Göttingen — 2Department of Chemical Engineering, Ben Gurion University of the Negev, Beer-Sheva, 84105, Israel
Strategies for controlling the orientation and limiting the defect density in self-assembled structures of copolymers have attracted abiding interest. Using Single-Chain-in-Mean-Field Monte-Carlo simulations and Ginzburg-Landau free-energy computations we study the influence of homogeneous and inhomogeneous electric fields on the self-assembled morphologies of symmetric, lamella-forming copolymer. We present results on the influence of an electric field on the ordering kinetics. We study the interplay between an electric field and a patterned substrate in a thin-film geometry and the relative stability of lamellar phases with different orientations that can form in a cylindric capacitor.