Park, Hyunchul Cho, Hyesung Lee, Albert S. Yu, Seunggun Lee, Jin Hong Cho, Kie Yong Hong, Soon Man Koo, Chong Min 2024-01-20T00:31:09Z 2024-01-20T00:31:09Z 2022-01-10 2017-10 1022-1336 https://pubs.kist.re.kr/handle/201004/122198 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 micro-apertures 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. English WILEY-V C H VERLAG GMBH SURFACE WRINKLES ULTRAVIOLET/OZONE TREATMENT POLY(DIMETHYL SILOXANE) THIN-FILMS POLYMER ADHESION SUBSTRATE MEMBRANES NETWORKS SKIN Multidirectional Wrinkle Patterns Programmed by Sequential Uniaxial Strain with Conformal yet Nontraceable Masks Article 10.1002/marc.201700311 1 MACROMOLECULAR RAPID COMMUNICATIONS, v.38, no.19 MACROMOLECULAR RAPID COMMUNICATIONS 38 19 scie scopus 000412288500005 2-s2.0-85030628924 Polymer Science Polymer Science Article SURFACE WRINKLES ULTRAVIOLET/OZONE TREATMENT POLY(DIMETHYL SILOXANE) THIN-FILMS POLYMER ADHESION SUBSTRATE MEMBRANES NETWORKS SKIN diffraction grating multidirectional wrinkle sequential uniaxial strain soft template