气候变化领域集成服务门户(CCPortal): Circular swimming motility and disordered hyperuniform state in an algae system

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DOI	10.1073/pnas.2100493118
	Circular swimming motility and disordered hyperuniform state in an algae system
	Huang M.; Hu W.; Yang S.; Liu Q.-X.; Zhang H.P.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:18
英文摘要	Active matter comprises individually driven units that convert locally stored energy into mechanical motion. Interactions between driven units lead to a variety of nonequilibrium collective phenomena in active matter. One of such phenomena is anomalously large density fluctuations, which have been observed in both experiments and theories. Here we show that, on the contrary, density fluctuations in active matter can also be greatly suppressed. Our experiments are carried out with marine algae (Effrenium voratum), which swim in circles at the air-liquid interfaces with two different eukaryotic flagella. Cell swimming generates fluid flow that leads to effective repulsions between cells in the far field. The long-range nature of such repulsive interactions suppresses density fluctuations and generates disordered hyperuniform states under a wide range of density conditions. Emergence of hyperuniformity and associated scaling exponent are quantitatively reproduced in a numerical model whose main ingredients are effective hydrodynamic interactions and uncorrelated random cell motion. Our results demonstrate the existence of disordered hyperuniform states in active matter and suggest the possibility of using hydrodynamic flow for self-assembly in active matter. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Algae; Circular microswimmer; Hydrodynamic interaction; Hyperuniformity; Transverse flagellum
语种	英语
scopus关键词	article; cell motion; eukaryote; flagellum; fluid flow; hydrodynamics; marine alga; nonhuman; swimming
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/238927
作者单位	School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China; Institute of Natural Sciences, Shanghai Jiao Tong University, Shanghai, 200240, China; State Key Laboratory of Estuarine and Coastal Research, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China; Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, China
推荐引用方式 GB/T 7714	Huang M.,Hu W.,Yang S.,et al. Circular swimming motility and disordered hyperuniform state in an algae system[J],2021,118(18).
APA	Huang M.,Hu W.,Yang S.,Liu Q.-X.,&Zhang H.P..(2021).Circular swimming motility and disordered hyperuniform state in an algae system.Proceedings of the National Academy of Sciences of the United States of America,118(18).
MLA	Huang M.,et al."Circular swimming motility and disordered hyperuniform state in an algae system".Proceedings of the National Academy of Sciences of the United States of America 118.18(2021).