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DOI	10.1073/pnas.2011174118
	Self-shaping liquid crystal droplets by balancing bulk elasticity and interfacial tension
	Peddireddy K.; Čopar S.; Le K.V.; Muševič I.; Bahr C.; Jampani V.S.R.
发表日期	2021
ISSN	00278424
卷号	118 期号:14
英文摘要	The shape diversity and controlled reconfigurability of closed surfaces and filamentous structures, universally found in cellular colonies and living tissues, are challenging to reproduce. Here, we demonstrate a method for the self-shaping of liquid crystal (LC) droplets into anisotropic and three-dimensional superstructures, such as LC fibers, LC helices, and differently shaped LC vesicles. The method is based on two surfactants: One dissolved in the LC dispersed phase and the other in the aqueous continuous phase. We use thermal stimuli to tune the bulk LC elasticity and interfacial energy, thereby transforming an emulsion of polydispersed, spherical nematic droplets into numerous, uniform-diameter fibers with multiple branches and vice versa. Furthermore, when the nematic LC is cooled to the smectic-A LC phase, we produce monodispersed microdroplets with a tunable diameter dictated by the cooling rate. Utilizing this temperature-controlled self-shaping of LCs, we demonstrate life-like smectic LC vesicle structures analogous to the biomembranes in living systems. Our experimental findings are supported by a theoretical model of equilibrium interface shapes. The shape transformation is induced by negative interfacial energy, which promotes a spontaneous increase of the interfacial area at a fixed LC volume. The method was successfully applied to many different LC materials and phases, demonstrating a universal mechanism for shape transformation in complex fluids. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Anisotropic liquids; Interfacial tension; Liquid crystals; Shape transformation; Vesicles
语种	英语
scopus关键词	fat droplet; anisotropy; aqueous solution; Article; biomembrane; cell size; cell structure; cell transformation; cell vacuole; cell volume; controlled study; cooling; dispersion; elasticity; liquid crystal; microscopy; phase transition; priority journal; surface tension; thermal stimulation
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/179990
作者单位	Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Göttingen, 37077, Germany; Department of Physics and Biophysics, University of San Diego, San Diego, CA 92110, United States; Faculty of Mathematics and Physics, University of Ljubljana, Ljubljana, 1000, Slovenia; Department of Chemistry, Faculty of Science, Tokyo University of Science, Tokyo, 162-8601, Japan; Condensed Matter Physics Department, Jozef Stefan Institute, Ljubljana, 1000, Slovenia; Physics and Materials Research Unit, University of Luxembourg, Luxembourg City, L-1511, Luxembourg
推荐引用方式 GB/T 7714	Peddireddy K.,Čopar S.,Le K.V.,et al. Self-shaping liquid crystal droplets by balancing bulk elasticity and interfacial tension[J],2021,118(14).
APA	Peddireddy K.,Čopar S.,Le K.V.,Muševič I.,Bahr C.,&Jampani V.S.R..(2021).Self-shaping liquid crystal droplets by balancing bulk elasticity and interfacial tension.Proceedings of the National Academy of Sciences of the United States of America,118(14).
MLA	Peddireddy K.,et al."Self-shaping liquid crystal droplets by balancing bulk elasticity and interfacial tension".Proceedings of the National Academy of Sciences of the United States of America 118.14(2021).