NIST logo

Publication Citation: Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures

NIST Authors in Bold

Author(s): Christopher Soles; Hyun W. Ro; K. J. Alvine; Oleg Shpyrko; Yenling Dai; Alec Sandy; Suresh Narayanan;
Title: Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures
Published: November 16, 2012
Abstract: The surface dynamics of thin molten polystyrene films supported by nanoscale periodic silicon line-space gratings were investigated with X-ray photon correlation spectroscopy. Surface dynamics over these nanostructures exhibit high directional anisotropy above certain length scales, as compared to surface dynamics over flat substrates. A cutoff wavelength in the dynamics perpendicular to the grooves is observed. This marks a transition from standard over-damped capillary wave behavior to suppressed dynamics due to substrate interactions.
Citation: Physical Review Letters
Volume: 109
Pages: 5 pp.
Keywords: capillary waves; liquid films; polymers; viscosity; confinement; nanopatterning; X-ray photon correlation spectroscopy
Research Areas: Polymers, Characterization, Nanomaterials, Nanomaterials, Complex Fluids, Materials Science, Measurements
DOI: http://dx.doi.org/10.1103/PhysRevLett.109.207801  (Note: May link to a non-U.S. Government webpage)