期刊
NATIONAL SCIENCE REVIEW
卷 7, 期 7, 页码 1247-1257出版社
OXFORD UNIV PRESS
DOI: 10.1093/nsr/nwaa052
关键词
surface patterns; ordered wrinkles; reversible buckling; photodimerization; dynamic light diffraction
资金
- National Natural Science Foundation of China [51773114, 21704062, 11802173]
- Shanghai Municipal Government [17JC1400700]
- National Science Foundation for Distinguished Young Scholars [11625208]
- China Postdoctoral Science Foundation [2018M632103]
- Postdoctoral Innovative Talent support program [BX20180190]
Regulating existing micro and nano wrinkle structures into desired configurations is urgently necessary yet remains challenging, especially modulating wrinkle direction and location on demand. In this work, we propose a novel light-controlled strategy for surface wrinkles, which can dynamically and precisely regulate all basic characteristics of wrinkles, including wavelength, amplitude, direction and location (lambda, A, theta and L-c), and arbitrarily tune wrinkle topographies in two dimensions (2D). By considering the bidirectional Poisson's effect and soft boundary conditions, a modified theoretical model depicting the relation between stress distributions and the basic characteristics was developed to reveal the mechanical mechanism of the regulation strategy. Furthermore, the resulting 2D ordered wrinkles can be used as a dynamic optical grating and a smart template to reversibly regulate the morphology of various functional materials. This study will pave the way for wrinkle regulation and guide fabrication technology for functional wrinkled surfaces.
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