Mechanics and Strategies for Wrinkling Suppression: A Review

Frontiers in Mechanical Engineering

Jidong Shi¹  Zhaojie Zhang¹  Lingyu Zhao² 

[1] College of Engineering Physics, Shenzhen Technology University, Shenzhen, China;Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, China;

关键词: wrinkles;    thin films;    coatings;    compressive stress;    flexible electronics;   

DOI  :  10.3389/fmech.2022.910415

来源: DOAJ

【 摘 要 】

Wrinkling is a well-known phenomenon observed at various length scales for diverse materials. Despite a variety of research studies focusing on investigating wrinkling mechanisms and utilizing them to create surface patterns recently, wrinkling also brings about the loss of specific functional properties that were initially endowed to the thin films. For instance, wrinkling may result in the degradation of electrical and optical properties of the film; and the wrinkled films are easily delaminated. Therefore, it is still meaningful to find ways for the suppression of wrinkling on the thin film, although the relevant works are far less than those that utilize the surface instability to achieve certain structures. In this review, the approaches to restrain the emergence of wrinkles will be introduced. Following the introduction part, numerical analysis for wrinkle generation will be first discussed, by which the key parameters determining wrinkle initiation and morphology will be provided. Then, wrinkle suppression strategies by tailoring these parameters will be introduced in the following sections. This review aims to provide useful guidance for future research on alleviating surface fluctuations and achieving desired device functionality.

【 授权许可】

Unknown