气候变化领域集成服务门户(CCPortal): Sculpting crystals one Burgers vector at a time: Toward colloidal lattice robot swarms

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DOI	10.1073/pnas.2017377118
	Sculpting crystals one Burgers vector at a time: Toward colloidal lattice robot swarms
	VanSaders B.; Glotzer S.C.
发表日期	2021
ISSN	00278424
卷号	118 期号:3
英文摘要	Plastic deformation of crystalline materials with isotropic particle attractions proceeds by the creation and migration of dislocations under the influence of external forces. If dislocations are produced and migrated under the action of local forces, then material shape change can occur without the application of surface forces. We investigate how particles with variable diameters can be embedded in colloidal monolayers to produce dislocations on demand. We find in simulation that when embedded clusters of variable diameter particles are taken through multiple cycles of swelling and shrinking, large cumulative plastic slip is produced by the creation and biased motion of dislocation pairs in the solid for embedded clusters of particular geometries. In this way, dislocations emitted by these clusters (biased “dislocation emitters”) can be used to reshape colloidal matter. Our results are also applicable to larger-scale swarms of robotic particles that organize into dense ordered two-dimensional (2D) arrangements. We conclude with a discussion of how dislocations fulfill for colloids the role sought by “metamodules” in lattice robotics research and show how successive applications of shear as a unit operation can produce shape change through slicing and swirling. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Active matter; Colloids; Robotics; Soft matter; Swarming
语种	英语
scopus关键词	plastic; anisotropy; Article; colloid; geometry; interpersonal communication; particle size; prediction; priority journal; robotics; simulation; solid; stochastic model
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/180936
作者单位	Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, United States; Biointerfaces Institute, University of Michigan, Ann Arbor, MI 48109, United States
推荐引用方式 GB/T 7714	VanSaders B.,Glotzer S.C.. Sculpting crystals one Burgers vector at a time: Toward colloidal lattice robot swarms[J],2021,118(3).
APA	VanSaders B.,&Glotzer S.C..(2021).Sculpting crystals one Burgers vector at a time: Toward colloidal lattice robot swarms.Proceedings of the National Academy of Sciences of the United States of America,118(3).
MLA	VanSaders B.,et al."Sculpting crystals one Burgers vector at a time: Toward colloidal lattice robot swarms".Proceedings of the National Academy of Sciences of the United States of America 118.3(2021).