Dewetting of Thin Viscoelastic Polymer Films on Slippery Substrates
| dc.creator | Raphael, Elie | |
| dc.creator | Vilmin, Thomas | |
| dc.date | 2005-02-09 | |
| dc.date | 2005-02-17 | |
| dc.date.accessioned | 2026-07-07T03:03:40Z | |
| dc.date.available | 2026-07-07T03:03:40Z | |
| dc.description | Dewetting of thin polystyrene films deposited onto silicone wafers at temperatures close to the glass transition exhibits unusual dynamics and front morphologies. Here, we present a new theoretical approach of these phenomena taking into account both the viscoelastic properties of the film and the non-zero velocity of the film at the interface with the substrate (due to slippage). We then show how these two ingredients lead to : (a) A very asymmetric shape of the rim as the film dewetts, (b) A decrease of the dewetting velocity with time like $t^{-{1/2}}$ for times shorter than the reptation time (for larger times, the dewetting velocity reaches a constant value). Very recent experiments by Damman, Baudelet and Reiter [Phys. Rev. Lett. {\bf 91}, 216101 (2003)] present, however, a much faster decrease of the dewetting velocity. We then show how this striking result can be explained by the presence of residual stresses in the film. | |
| dc.description | Submitted to PRL | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0502228 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0502228 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/25839 | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Dewetting of Thin Viscoelastic Polymer Films on Slippery Substrates | |
| dc.type | text |