Abstract
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.
| Original language | English |
|---|---|
| Article number | 1700311 |
| Journal | Macromolecular Rapid Communications |
| Volume | 38 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2017 Oct 1 |
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Keywords
- diffraction grating
- multidirectional wrinkle
- sequential uniaxial strain
- soft template
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
Cite this
Multidirectional Wrinkle Patterns Programmed by Sequential Uniaxial Strain with Conformal yet Nontraceable Masks. / Park, Hyunchul; Cho, Hyesung; Lee, Albert S.; Yu, Seunggun; Lee, Jin Hong; Cho, Kie Yong; Hong, Soon Man; Koo, Chong Min.
In: Macromolecular Rapid Communications, Vol. 38, No. 19, 1700311, 01.10.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Multidirectional Wrinkle Patterns Programmed by Sequential Uniaxial Strain with Conformal yet Nontraceable Masks
AU - Park, Hyunchul
AU - Cho, Hyesung
AU - Lee, Albert S.
AU - Yu, Seunggun
AU - Lee, Jin Hong
AU - Cho, Kie Yong
AU - Hong, Soon Man
AU - Koo, Chong Min
PY - 2017/10/1
Y1 - 2017/10/1
N2 - 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.
AB - 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.
KW - diffraction grating
KW - multidirectional wrinkle
KW - sequential uniaxial strain
KW - soft template
UR - http://www.scopus.com/inward/record.url?scp=85030628924&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85030628924&partnerID=8YFLogxK
U2 - 10.1002/marc.201700311
DO - 10.1002/marc.201700311
M3 - Article
C2 - 28833812
AN - SCOPUS:85030628924
VL - 38
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
SN - 1022-1336
IS - 19
M1 - 1700311
ER -