Regulating existing micro and nano wrinkle structures into desired configurations is urgently necessary yet remains challenging, especially modulating wrinkle direction and location on demand. In this work, we propose a novel light-controlled strategy for surface wrinkles, which can dynamically and precisely regulate all basic characteristics of wrinkles, including wavelength, amplitude, direction and location (λ, A, θ and L_c), and arbitrarily tune wrinkle topographies in two dimensions (2D). By considering the bidirectional Poisson's effect and soft boundary conditions, a modified theoretical model depicting the relation between stress distributions and the basic characteristics was developed to reveal the mechanical mechanism of the regulation strategy. Furthermore, the resulting 2D ordered wrinkles can be used as a dynamic optical grating and a smart template to reversibly regulate the morphology of various functional materials. This study will pave the way for wrinkle regulation and guide fabrication technology for functional wrinkled surfaces.

中文翻译：

---

利用光调节表面皱纹


将现有的微米和纳米皱纹结构调节为所需的配置是迫切需要的，但仍然具有挑战性，特别是按需调节皱纹方向和位置。在这项工作中，我们提出了一种新颖的表面皱纹光控策略，它可以动态、精确地调节皱纹的所有基本特征，包括波长、幅度、方向和位置（ λ 、 A 、 θ和L _c ），并任意调整二维 (2D) 的皱纹拓扑。通过考虑双向泊松效应和软边界条件，建立了描述应力分布与基本特征之间关系的修正理论模型，以揭示调节策略的力学机制。此外，由此产生的二维有序皱纹可以用作动态光栅和智能模板，以可逆地调节各种功能材料的形态。这项研究将为皱纹调节铺平道路，并指导功能性皱纹表面的制造技术。