Engineering the shape and structure of materials by fractal cut

Title
Engineering the shape and structure of materials by fractal cut
Authors
조이길신중호아벨리노김태안Valentin KuninJu LiSu Yeon LeeShy YangHeung Nam Han최인석David J. Srolovitz
Keywords
expandibility; patterning; flexibility; differentiation; deformability; Stretchable devices
Issue Date
2014-12
Publisher
Proceedings of the National Academy of Sciences of the United States of America
Citation
VOL 111, NO 49, 17390-17395
Abstract
In this paper we discuss the transformation of a sheet of material into a wide range of desired shapes and patterns by introducing a set of simple cuts in a multilevel hierarchy with different motifs. Each choice of hierarchical cut motif and cut level allows the material to expand into a unique structure with a unique set of properties. We can reverse-engineer the desired expanded geometries to find the requisite cut pattern to produce it without changing the physical properties of the initial material. The concept was experimentally realized and applied to create an electrode that expands to >800% the original area with only very minor stretching of the underlying material. The generality of our approach greatly expands the design space for materials so that they can be tuned for diverse applications.
URI
http://pubs.kist.re.kr/handle/201004/49225
ISSN
00278424
Appears in Collections:
KIST Publication > Article
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