title: X-ray scattering from freestanding polymer films with geometrically curved surfaces.
abstract: We show that the x-ray surface scattering from a freestanding polymer film exhibits features that cannot be explained by the usual stochastic formalism for surfaces with random height fluctuations. Instead, a geometric description of the film morphology assuming two curved surfaces characterized by a radius of curvature and a lateral cutoff length successfully accounts for the phase difference between the Kiessig fringes of the nominal "specular" and "off-specular" components of the scattering. The formalism allows one to distinguish unambiguously between conformal and anticonformal curvature morphologies at long length scales.
authors.affiliation: Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: D R
authors.initials: DR
authors.lastname: Lee
authors.forename: K
authors.initials: K
authors.lastname: Shin
authors.forename: O H
authors.initials: OH
authors.lastname: Seeck
authors.forename: Hyunjung
authors.initials: H
authors.lastname: Kim
authors.forename: Y-S
authors.initials: YS
authors.lastname: Seo
authors.forename: M
authors.initials: M
authors.lastname: Tolan
authors.forename: M H
authors.initials: MH
authors.lastname: Rafailovich
authors.forename: J
authors.initials: J
authors.lastname: Sokolov
authors.forename: S K
authors.initials: SK
authors.lastname: Sinha