2008/07/16 by Markus Rauscher, Ralf Blossey, Rauscher, Markus +5
Engineering · #FOS: Physical sciences #Fluid Dynamics and Heat Transfer #Fluid Dynamics and Thin Films #Heat Transfer and Boiling Studies #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.0807.2564
openalex publication_date 2008/07/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We compare the dispersion relations for spinodally dewetting thin liquid films for increasing magnitude of interfacial slip length in the lubrication limit. While the shape of the dispersion relation, in particular the position of the maximum, are equal for no-slip up to moderate slip lengths, the position of the maximum shifts to much larger wavelengths for large slip lengths. Here, we discuss the implications of this fact for recently developed methods to assess the disjoining pressure in spinodally unstable thin films by measuring the shape of the roughness power spectrum. For PS films on OTS covered Si wafers (with slip length b approx. 1 mum) we predict a 20% shift of the position of the maximum of the power spectrum which should be detectable in experiments.