X-ray scattering from freestanding polymer films with geometrically curved surfaces.
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.
Lee
D R
DR
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Shin
K
K
Seeck
O H
OH
Kim
Hyunjung
H
Seo
Y-S
YS
Tolan
M
M
Rafailovich
M H
MH
Sokolov
J
J
Sinha
S K
SK