气候变化领域集成服务门户(CCPortal): Chemically controlled pattern formation in self-oscillating elastic shells

CCPortal

DOI	10.1073/pnas.2025717118
	Chemically controlled pattern formation in self-oscillating elastic shells
	Li S.; Matoz-Fernandez D.A.; Aggarwal A.; de la Cruz M.O.
发表日期	2021
ISSN	00278424
卷号	118 期号:10
英文摘要	Patterns and morphology develop in living systems such as embryos in response to chemical signals. To understand and exploit the interplay of chemical reactions with mechanical transformations, chemomechanical polymer systems have been synthesized by attaching chemicals into hydrogels. In this work, we design autonomous responsive elastic shells that undergo morphological changes induced by chemical reactions. We couple the local mechanical response of the gel with the chemical processes on the shell. This causes swelling and deswelling of the gel, generating diverse morphological changes, including periodic oscillations. We further introduce a mechanical instability and observe buckling–unbuckling dynamics with a response time delay. Moreover, we investigate the mechanical feedback on the chemical reaction and demonstrate the dynamic patterns triggered by an initial deformation. We show the chemical characteristics that account for the shell morphology and discuss the future designs for autonomous responsive materials. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Active solids; Mechanochemical coupling; Surface mechanics
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180420
作者单位	Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, United States; Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, United States; Department of Chemistry, Northwestern University, Evanston, IL 60208, United States
推荐引用方式 GB/T 7714	Li S.,Matoz-Fernandez D.A.,Aggarwal A.,et al. Chemically controlled pattern formation in self-oscillating elastic shells[J],2021,118(10).
APA	Li S.,Matoz-Fernandez D.A.,Aggarwal A.,&de la Cruz M.O..(2021).Chemically controlled pattern formation in self-oscillating elastic shells.Proceedings of the National Academy of Sciences of the United States of America,118(10).
MLA	Li S.,et al."Chemically controlled pattern formation in self-oscillating elastic shells".Proceedings of the National Academy of Sciences of the United States of America 118.10(2021).