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첨단연성물질 연구단
첨단연성물질 연구단
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Topography-guided buckling of swollen polymer bilayer films into three-dimensional structures

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Title
Topography-guided buckling of swollen polymer bilayer films into three-dimensional structures
Author(s)
Joonwoo Jeong; Yigil Cho; Su Yeon Lee; Xingting Gong; Randall D. Kamien; Shu Yang; A. G. Yodhd
Publication Date
2017-02
Journal
Soft Matter, v.13, no.5, pp.956 - 962
Abstract
Thin films that exhibit spatially heterogeneous swelling often buckle into the third dimension to minimize stress. These effects, in turn, offer a promising strategy to fabricate complex three-dimensional structures from two-dimensional sheets. Here we employ surface topography as a new means to guide buckling of swollen polymer bilayer films and thereby control the morphology of resulting three-dimensional objects. Topographic patterns are created on poly(dimethylsiloxane) (PDMS) films selectively coated with a thin layer of non-swelling parylene on different sides of the patterned films. After swelling in an organic solvent, various structures are formed, including half-pipes, helical tubules, and ribbons. We demonstrate these effects and introduce a simple geometric model that qualitatively captures the relationship between surface topography and the resulting swollen film morphologies. The model's limitations are also examined. © The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/3499
ISSN
1744-683X
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
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