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Facile fabrication of micro/nano-structured wrinkles by controlling elastic properties of polydimethylsiloxane substrates

Authors
Kim, Eun SeonKim, Sung HyunLee, Sang-JinLee, Jae HeungByeon, MinseonSuh, Dong HackChoi, Woo Jin
Issue Date
Jan-2021
Publisher
ELSEVIER SCI LTD
Keywords
Viscoelasticity; Hierarchical structure; Sputtering; Fluorocarbon thin film
Citation
POLYMER, v.212, pp 1 - 10
Pages
10
Indexed
SCIE
SCOPUS
Journal Title
POLYMER
Volume
212
Start Page
1
End Page
10
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/194183
DOI
10.1016/j.polymer.2020.123087
ISSN
0032-3861
1873-2291
Abstract
Multiscale wrinkled structures are widely used in practical applications, such as smart adhesion, surface engineering, and stretchable electronics owing to their easy and low-cost strategy for controlling surface morphologies. This study demonstrates a facile technique for creating multiscale wrinkles of fluorocarbon thin films deposited on soft and stiff polydimethylsiloxane (PDMS) substrates by regulating the elastic properties of the substrates. The elastic properties of the substrates were changed by varying the crosslinking temperatures and the amount of crosslinking agent. The wrinkling structures were strongly influenced by the elastic properties of the substrate during a fluorocarbon polymer sputtering process. For the stiff PDMS substrates, wrinkles with periodic and sinusoidal patterns were observed due to the thermal compression of the bilayer system after deposition. Spontaneous hierarchical structures were generated on soft PDMS substrates by the penetration of fluorocarbon molecules into the PDMS substrates during the sputtering process.
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서울 공과대학 > 서울 화학공학과 > 1. Journal Articles

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