Multidirectional Wrinkle Patterns Programmed by Sequential Uniaxial Strain with Conformal yet Nontraceable Masks,Macromolecular Rapid Communications

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Multidirectional Wrinkle Patterns Programmed by Sequential Uniaxial Strain with Conformal yet Nontraceable Masks
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2017-08-18 , DOI: 10.1002/marc.201700311
Hyunchul Park ₁ , Hyesung Cho ₁ , Albert S. Lee ₁ , Seunggun Yu ₁ , Jin Hong Lee ₁ , Kie Yong Cho ₁ , Soon Man Hong ₁ , Chong Min Koo _{1,

2,

3}

Affiliation

Surface wrinkling is a promising route to control the mechanical, electrical, and optical properties of materials in a wide range of applications. However, previous artificial wrinkles are restricted to single or random orientation and lacks selectivity. To address this challenge, this study presents multidirectional wrinkle patterns with high selectivity and orientation through sequential uniaxial strain with conformal polymeric shadow masks. The conformal but nontraceable polymeric stencil with microapertures are adhered to a flat substrate prior to oxidation, which forms discrete and parallel wrinkles in confined domains without any contamination. By fully investigating the process, this study displays compound topography of wrinkles consisting of wrinkle islands and surrounding secondary wrinkles on the same surface. With this topography, various diffusion properties are presented: from semi‐transparent yet diffusive films to multidirectional diffusive films, which will be available for new types of optical diffuser applications.

中文翻译：

连续单轴应变与保形但不可追踪的掩膜编程的多向皱纹

表面起皱是在广泛的应用中控制材料的机械，电气和光学性能的有前途的途径。然而，先前的人工皱纹仅限于单一或随机取向，并且缺乏选择性。为了解决这一挑战，本研究通过采用保形聚合物荫罩的顺序单轴应变，提出了具有高选择性和定向性的多向皱纹图案。具有微孔的共形但不可溯源的聚合物模具在氧化之前粘附到平坦的基材上，从而在密闭区域中形成离散且平行的皱纹，而没有任何污染。通过全面研究该过程，该研究显示了由同一岛表面上的皱纹岛和周围的次级皱纹组成的皱纹的复合形貌。有了这个地形，

更新日期：2017-08-18

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