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Sci Adv. 2017 Jun 30;3(6):e1700071. doi: 10.1126/sciadv.1700071. eCollection 2017 Jun.

Self-organization of maze-like structures via guided wrinkling.

Bae HJ1, Bae S2,3, Yoon J4, Park C4, Kim K4, Kwon S1,2,3,5, Park W4.

Author information

1
Nano Systems Institute, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea.
2
Institute of Entrepreneurial Bio Convergence, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea.
3
Interdisciplinary Program for Bioengineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea.
4
Department of Electronics Engineering, Kyung Hee University, Deongyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, South Korea.
5
Department of Electrical and Computer Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea.

Abstract

Sophisticated three-dimensional (3D) structures found in nature are self-organized by bottom-up natural processes. To artificially construct these complex systems, various bottom-up fabrication methods, designed to transform 2D structures into 3D structures, have been developed as alternatives to conventional top-down lithography processes. We present a different self-organization approach, where we construct microstructures with periodic and ordered, but with random architecture, like mazes. For this purpose, we transformed planar surfaces using wrinkling to directly use randomly generated ridges as maze walls. Highly regular maze structures, consisting of several tessellations with customized designs, were fabricated by precisely controlling wrinkling with the ridge-guiding structure, analogous to the creases in origami. The method presented here could have widespread applications in various material systems with multiple length scales.

KEYWORDS:

control; guided wrinkling; mazes; mechanical instability; self-organization

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