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After rainfall, pine needles often float on the surface of small puddles. As the water evaporates, they self-assemble into distinct clusters. Motivated by this natural phenomenon, we experimentally investigate the dynamic evolution of…

软凝聚态物质 · 物理学 2026-01-06 Xin Li , Shuchen Zhang , Mark J. Bowick , Duanduan Wan

Most, but not all, liquid crystals tend to align when subject to shear flow, while most nematic polymeric liquid crystals undergo a tumbling instability, where the director rotate with the flow. The reasons of this instability remain…

软凝聚态物质 · 物理学 2019-07-24 Stefano S. Turzi

Even though chiral nematic phases were the first liquid crystals experimentally observed more than a century ago, the origin of the thermodynamic stability of cholesteric states is still unclear. In this Letter we address the problem by…

软凝聚态物质 · 物理学 2014-09-05 S. Belli , S. Dussi , M. Dijkstra , R. van Roij

Achieving control and tunability of lyotropic materials has been a long-standing goal of liquid crystal research. Here we show that the elasticity of a liquid crystal system consisting of a dense suspension of semiflexible biopolymers can…

软凝聚态物质 · 物理学 2018-01-12 Rui Zhang , Nitin Kumar , Jennifer Ross , Margaret L. Gardel , Juan J. de Pablo

In this paper, we prove the existence and uniqueness of local strong solutions of the hydrodynamics of nematic liquid crystals system under the initial data satisfying a natural compatibility condition. Also the global strong solutions of…

泛函分析 · 数学 2011-07-01 Xiangao Liu , Lanming Liu , Yihang Hao

Electro-hydrodynamic phenomena in liquid crystals constitute an old but still very active research area. The reason is that these phenomena play the key role in various applications of liquid crystals and due to the general interest of…

软凝聚态物质 · 物理学 2024-03-14 E. S. Pikina , A. R. Muratov , E. I. Kats , V. V. Lebedev

The recent discovery of ferroelectric nematics-genuine 3D ferroelectric fluids-has underscored the importance of electrostatic interactions in shaping the physical behaviour of soft matter systems. In this paper, we investigate the…

Instabilities in thin elastic sheets, such as wrinkles, are of broad interest both from a fundamental viewpoint and also because of their potential for engineering applications. Nematic liquid crystal elastomers offer a new form of control…

软凝聚态物质 · 物理学 2019-10-03 Madison S. Krieger , Marcelo A. Dias

We investigate the mechanics of an active droplet endowed with internal nematic order and surrounded by an isotropic Newtonian fluid. Using numerical simulations we demonstrate that, due to the interplay between the active stresses and the…

软凝聚态物质 · 物理学 2014-04-23 L. Giomi , A. DeSimone

The translation and shape deformations of a passive viscous Newtonian droplet immersed in an active nematic liquid crystal under circular confinement are analyzed using a linear stability analysis. We focus on the case of a sharply aligned…

软凝聚态物质 · 物理学 2025-07-29 Tanumoy Dhar , Michael J. Shelley , David Saintillan

Droplet formation of suspensions is present in many industrial and technological processes such as coating and food engineering. Whilst the finite time singularity of the minimum neck diameter in capillary break-up of simple liquids can be…

流体动力学 · 物理学 2015-06-15 Anke Lindner , Jorge Eduardo Fiscina , Christian Wagner

Colloidal particles disturb the alignment of rod-like molecules of liquid crystals, giving rise to long-range interactions that minimize the free energy of distorted regions. Particle shape and topology are known to guide this self-assembly…

软凝聚态物质 · 物理学 2017-12-29 Ye Yuan , Angel Martinez , Bohdan Senyuk , Mykola Tasinkevych , Ivan I. Smalyukh

The understanding of self-organization in the twist-bend nematic $(N_\text{TB})$ phase, identified in 2011 in liquid crystal dimers, is at the forefront of soft matter research worldwide. This new nematic phase develops structural chirality…

软凝聚态物质 · 物理学 2020-10-27 Lech Longa , Wojciech Tomczyk

Nematic ordering describes the phenomenon where anisotropic molecules tend to locally align, like matches in a matchbox. This ordering can arise in solids (as nematic elastomers), liquids (as liquid crystals), and in gases. In the 1940s,…

数学物理 · 物理学 2024-10-30 Patrick E. Farrell , Giovanni Russo , Umberto Zerbinati

Rigorous understanding of the self-assembly of colloidal nanocrystals is crucial to the development of tailored nanostructured materials. Despite extensive studies, a mechanistic understanding of self-assembly under non-equilibrium driven…

In this paper, we speculate on a possible application of Liquid Crystal Elastomers to the field of soft robotics. In particular, we study a concept for limbless locomotion that is amenable to miniaturisation. For this purpose, we formulate…

软凝聚态物质 · 物理学 2016-02-09 Antonio DeSimone , Paolo Gidoni , Giovanni Noselli

We investigate a number of complex patterns driven by the electro-convection instability in a planarly aligned layer of a nematic liquid crystal. They are traced back to various secondary instabilities of the ideal roll patterns bifurcating…

软凝聚态物质 · 物理学 2015-12-23 Alexei Krekhov , Bernd Dressel , Werner Pesch , Vladimir Delev , Eduard Batyrshin

In experiments, an individual chemically active liquid crystal (LC) droplet submerged in the bulk of a surfactant solution may self-propel along a straight, helical, or random trajectory. In this paper, we develop a minimal model capturing…

软凝聚态物质 · 物理学 2019-09-16 Matvey Morozov , Sebastien Michelin

We consider a lattice model for amphiphiles in a solvent with molecules chemically similar to one part of the amphiphilic molecule. The dependence of the interaction potential on orientation of the amphiphilic molecules is taken into…

软凝聚态物质 · 物理学 2014-11-14 Jakub Pękalski , Paweł Rogowski , Alina Ciach

A nonlinear model due to Soddemann et al. [37] and Stewart [38] describing incompressible smectic-A liquid crystals under flow is studied. In comparison to previously considered models, this particular model takes into account possible…

偏微分方程分析 · 数学 2020-01-07 Etienne Emmrich , Robert Lasarzik