A wavy configuration is a simple yet powerful structural design strategy, which has been widely used in flexible and stretchable electronics. A buckled structure created from a prestretch-contact-release process represents an early effort. Substrates with engineered surface relief structures (e.g., rectangular islands or tripod structure) have enabled stretchability to the devices without sacrificing their electric performance (e.g., high areal coverage for LEDs/photovoltaics/batteries/supercapacitors). In particular, the substrate with a tripod surface relief structure allows wrinkled devices to be suspended on a soft tripod substrate. This minimizes the contact area between devices and the deformed substrate, which contributes to a significantly reduced interfacial stress/strain. To uncover the underlying mechanism of such a design, we exploit the energy method to analytically investigate the buckling and postbuckling behaviors of stiff films suspended on a stretchable polymeric substrate with a tripod ...

中文翻译：

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悬吊在具有三脚架表面浮雕结构的基板上的刚性薄膜的屈曲分析

波浪配置是一种简单而强大的结构设计策略，已广泛应用于柔性和可拉伸电子产品中。从预拉伸-接触-释放过程中创建的弯曲结构代表了早期的努力。具有工程表面浮雕结构（例如，矩形岛或三脚架结构）的基板在不牺牲其电气性能（例如，LED/光伏/电池/超级电容器的高面积覆盖率）的情况下实现了器件的可拉伸性。特别是，具有三脚架表面浮雕结构的基板允许起皱的设备悬挂在柔软的三脚架基板上。这最大限度地减少了器件和变形基板之间的接触面积，这有助于显着降低界面应力/应变。为了揭示这种设计的潜在机制，