HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Global Institution for Collaborative Research and Education : GI-CoRE >
Peer-reviewed Journal Articles, etc >

Elastocapillary levelling of thin viscous films on soft substrates

Files in This Item:
Elastocapillary_levelling_of_thin_viscous_films_on_soft_substrates.pdf970.12 kBPDFView/Open
supp.pdfsupplemental file603.53 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Elastocapillary levelling of thin viscous films on soft substrates
Authors: Rivetti, Marco Browse this author
Bertin, Vincent Browse this author
Salez, Thomas Browse this author
Hui, Chung-Yuen Browse this author
Linne, Christine Browse this author
Arutkin, Maxence Browse this author
Wu, Haibin Browse this author
Raphaël, Elie Browse this author
Bäumchen, Oliver Browse this author
Issue Date: 1-Sep-2017
Publisher: American Physical Society
Journal Title: Physical Review Fluids
Volume: 2
Start Page: 094001-1
End Page: 094001-13
Publisher DOI: 10.1103/PhysRevFluids.2.094001
Abstract: A thin liquid film with nonzero curvature at its free surface spontaneously flows to reach a flat configuration, a process driven by Laplace pressure gradients and resisted by the liquid’s viscosity. Inspired by recent progresses on the dynamics of liquid droplets on soft substrates, we here study the relaxation of a viscous film supported by an elastic foundation. Experiments involve thin polymer films on elastomeric substrates, where the dynamics of the liquid-air interface is monitored using atomic force microscopy. A theoretical model that describes the coupled evolution of the solid-liquid and the liquid-air interfaces is also provided. In this soft-levelling configuration, Laplace pressure gradients not only drive the flow, but they also induce elastic deformations on the substrate that affect the flow and the shape of the liquid-air interface itself. This process represents an original example of elastocapillarity that is not mediated by the presence of a contact line. We discuss the impact of the elastic contribution on the levelling dynamics and show the departure from the classical self-similarities and power laws observed for capillary levelling on rigid substrates.
Rights: ©2017 American Physical Society
Type: article
Appears in Collections:国際連携研究教育局 : GI-CoRE (Global Institution for Collaborative Research and Education : GI-CoRE) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)


Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University