Effects of In-plane elastic stress and normal external stress on viscoelastic thin film stability

• Verfasst von: Closa, Fabien [VerfasserIn]
• Verfasst von: Ziebert, Falko [VerfasserIn]
• Verfasst von: Raphaël, Elie [VerfasserIn]
• Titel: Effects of In-plane elastic stress and normal external stress on viscoelastic thin film stability
• Verf.angabe: F. Closa, F. Ziebert, E. Raphaël
• E-Jahr: 2012
• Jahr: 09 July 2012
• Umfang: 14 S.
• Fussnoten: Gesehen am 27.09.2022
• Titel Quelle: Enthalten in: Mathematical modelling of natural phenomena
• Ort Quelle: Les Ulis : EDP Sciences, 2006
• Jahr Quelle: 2012
• Band/Heft Quelle: 7(2012), 4, Seite 6-19
• ISSN Quelle: 1760-6101
• DOI: doi:10.1051/mmnp/20127402
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1807838455

Abstract

Motivated by recent experiments on the electro-hydrodynamic instability of spin-cast polymer films, we study the undulation instability of a thin viscoelastic polymer film under in-plane stress and in the presence of either a close by contactor or an electric field, both inducing a normal stress on the film surface. We find that the in-plane stress affects both the typical timescale of the instability and the unstable wavelengths. The film stability is also sensitive to the boundary conditions used at the film-substrate interface. We have considered two conditions, either rigidly attaching the film to the substrate or allowing for slip.