Issue 48

Y. Sun et alii, Frattura ed Integrità Strutturale, 48 (2019) 648-665; DOI: 10.3221/IGF-ESIS.48.62 648 Localized wrinkling of metal films on elastic and liquid substrates Yi Sun Zhejiang Sci-Tech University, China Norwegian University of Science and Technology, Norway yisun1987@hotmail.com Liping Yan, Benyong Chen Zhejiang Sci-Tech University, China yanliping@zstu.edu.cn, chenby@zstu.edu.cn Wei Song Harbin Institute of Technology, China Norwegian University of Science and Technology, Norway swingways@hotmail.com Filippo Berto Norwegian University of Science and Technology, Norway filippo.berto@ntnu.no A BSTRACT . Global and localized wrinkling phenomena in films/substrates have been widely studied by means of experiment and theoretical analyses in the past two decades. They have shown broad application prospect in microstructure manufacture. The global wrinkling patterns with well-defined wavelengths can be readily fabricated in the polymer films, the metal films and the surface of modified elastic substrates by O 2 plasma or UVO, and they have attracted much attention. For the localized wrinkling patterns, however, most previous studies were limited to polymer films, which while metal films were not properly considered. Recent studies have shown that wrinkles can be localized by constrained edges and cracks in metal films deposited on the elastic and liquid substrates. In this review, we focus on the formation and evolution mechanisms of these localized wrinkle patterns, and we aim to provide some useful guidance for future studies on designing the localized wrinkling patterns with real-time controllable dimension, orientation and morphology in the films/substrates. K EYWORDS . Wrinkles; Cracks; Metal films; Stress; Defects; Constrained edges. Citation: Sun, Y., Yan, L., Chen, B., Song, W., Berto, F., Localized wrinkling of metal films on elastic and liquid substrates, Frattura ed Integrità Strutturale, 48 (2019) 648-665. Received: 16.12.2018 Accepted: 22.01.2019 Published: 01.04.2019 Copyright: © 2019 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.