Summary: Coarse Graining in Block Copolymer Films
YOAV TSORI,1
DAVID ANDELMAN2
1
Department of Chemical Engineering, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
2
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