HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
国際連携研究教育局 : GI-CoRE >
雑誌発表論文等  >

Elastocapillary levelling of thin viscous films on soft substrates

Elastocapillary_levelling_of_thin_viscous_films_on_soft_substrates.pdf970.12 kBPDF見る/開く
supp.pdfsupplemental file603.53 kBPDF見る/開く

タイトル: Elastocapillary levelling of thin viscous films on soft substrates
著者: Rivetti, Marco 著作を一覧する
Bertin, Vincent 著作を一覧する
Salez, Thomas 著作を一覧する
Hui, Chung-Yuen 著作を一覧する
Linne, Christine 著作を一覧する
Arutkin, Maxence 著作を一覧する
Wu, Haibin 著作を一覧する
Raphaël, Elie 著作を一覧する
Bäumchen, Oliver 著作を一覧する
発行日: 2017年 9月 1日
出版者: American Physical Society
誌名: Physical Review Fluids
巻: 2
開始ページ: 094001-1
終了ページ: 094001-13
出版社 DOI: 10.1103/PhysRevFluids.2.094001
抄録: 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
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)



本サイトに関するご意見・お問い合わせは repo at へお願いします。 - 北海道大学