Iowa State University From the SelectedWorks of Eric W. Cochran April, 2007 Symmetry Breaking of In-Plane Order in Confned Copolymer Mesophases G. E. Stein Eric W. Cochran K. Katsov G. H. Fredrickson E. J. Kramer, et al. Available at: htps://works.bepress.com/eric_cochran/17/