气候变化领域集成服务门户(CCPortal): Photosynthesis-assisted remodeling of three-dimensional printed structures

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DOI	10.1073/pnas.2016524118
	Photosynthesis-assisted remodeling of three-dimensional printed structures
	Yu K.; Feng Z.; Du H.; Xin A.; Lee K.H.; Li K.; Su Y.; Wang Q.; Fang N.X.; Daraio C.
发表日期	2021
ISSN	00278424
卷号	118 期号:3
英文摘要	The mechanical properties of engineering structures continuously weaken during service life because of material fatigue or degradation. By contrast, living organisms are able to strengthen their mechanical properties by regenerating parts of their structures. For example, plants strengthen their cell structures by transforming photosynthesis-produced glucose into stiff polysaccharides. In this work, we realize hybrid materials that use photosynthesis of embedded chloroplasts to remodel their microstructures. These materials can be used to three-dimensionally (3D)-print functional structures, which are endowed with matrix-strengthening and crack healing when exposed to white light. The mechanism relies on a 3D-printable polymer that allows for an additional cross-linking reaction with photosynthesis-produced glucose in the material bulk or on the interface. The remodeling behavior can be suspended by freezing chloroplasts, regulated by mechanical preloads, and reversed by environmental cues. This work opens the door for the design of hybrid synthetic-living materials, for applications such as smart composites, lightweight structures, and soft robotics. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	3D printing; Photosynthesis; Self-healing; Self-remodeling; Self-strengthening
语种	英语
scopus关键词	glucose; polymer; Article; chloroplast; concentration (parameter); controlled study; cross linking; freezing; healing; illumination; nonhuman; photosynthesis; priority journal; robotics; tensile strength; three dimensional printing; white light; Young modulus
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/180979
作者单位	Sonny Astani, Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA 90089, United States; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, United States
推荐引用方式 GB/T 7714	Yu K.,Feng Z.,Du H.,et al. Photosynthesis-assisted remodeling of three-dimensional printed structures[J],2021,118(3).
APA	Yu K..,Feng Z..,Du H..,Xin A..,Lee K.H..,...&Daraio C..(2021).Photosynthesis-assisted remodeling of three-dimensional printed structures.Proceedings of the National Academy of Sciences of the United States of America,118(3).
MLA	Yu K.,et al."Photosynthesis-assisted remodeling of three-dimensional printed structures".Proceedings of the National Academy of Sciences of the United States of America 118.3(2021).