Debonding of a Gel from a Rigid Substrate
发布时间：2019年11月25日
浏览次数：6434
发布者: Xiaoni Tan
主讲人： Prof. Duvan Henao (Pontificia Universidad Católica de Chile)
活动时间： 从 2019-11-25 10:00 到 11:00
场地： Room 77201, Jingchunyuan 78, BICMR
A variational model for the delamination of polymer gel thin films from rigid substrates is presented. A formal asymptotic analysis of a simplified 2D version of the underlying governing equations show that, as the film grows thinner, the absorption of the moisture of its surroundings tends to produce a homogeneous vertical stretch in the part of the film that remains bonded to the substrate and a state of free swelling in the debonded part. A transition layer, with a width comparable to the film thickness, is developed in order to connect the two swelling modes. This work is joint with Carme Calderer (U. Minnesota), Carlos Garavito-Garzon (U. Minnesota), Suping Lyu (Medtronic, Inc.), and Lorenzo Tapia (PUC - Chile).
