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Coarse Graining in Block Copolymer Films YOAV TSORI,1

Summary: Coarse Graining in Block Copolymer Films
Department of Chemical Engineering, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University,
Ramat Aviv, Tel Aviv 69978, Israel
Received 17 February 2006; revised 1 May 2006; accepted 26 May 2006
DOI: 10.1002/polb.20898
Published online in Wiley InterScience (www.interscience.wiley.com).
ABSTRACT: We present few ordering mechanisms in block copolymer melts in the coarse-
graining approach. For chemically homogeneous or modulated confining surfaces, the
surface ordering is investigated above and below the order­disorder temperature. In
some cases, the copolymer deformation near the surface is similar to the copolymer mor-
phology in bulk grain boundaries. Block copolymers in contact with rough surfaces are
considered as well, and the transition from lamellae parallel to perpendicular to the sur-
face is investigated as a function of surface roughness. Finally, we describe how external
electric fields can be used to align block copolymer mesophases in a desired direction,
or to induce an order­order phase transition, and dwell on the role of mobile dissoci-


Source: Andelman, David - School of Physics and Astronomy, Tel Aviv University


Collections: Materials Science; Physics