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Title: Capillary Wave Dynamics of Thin Polymer Films over Submerged Nanostructures

Journal Article · · Physical Review Letters, 109(20):Article No. 207801

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 length scale 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.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1055394
Report Number(s):
PNNL-SA-84197
Journal Information:
Physical Review Letters, 109(20):Article No. 207801, Journal Name: Physical Review Letters, 109(20):Article No. 207801
Country of Publication:
United States
Language:
English

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