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相关论文: A new approach to non-isothermal models for nemati…

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The Ericksen-Leslie model for nematic liquid crystals in a bounded domain with general Leslie and isotropic Ericksen stress is studied in the case of a non-isothermal and incompressible fluid. This system is shown to be locally well-posed…

偏微分方程分析 · 数学 2016-07-25 Matthias Hieber , Jan Prüss

We consider a mathematical model that describes the flow of a Nematic Liquid Crystal (NLC) film placed on a flat substrate, across which a spatially-varying electric potential is applied. Due to their polar nature, NLC molecules interact…

软凝聚态物质 · 物理学 2021-04-07 Ensela Mema , Lou Kondic , Linda J. Cummings

Simulations of nematic-isotropic transition of liquid crystals in two dimensions are performed using an O(2) vector model characterised by non linear nearest neighbour spin interaction governed by the fourth Legendre polynomial $P\_4$. The…

统计力学 · 物理学 2016-08-16 Ana Fariñas-Sanchez , Ricardo Paredes , Bertrand Berche

Liquid crystal elastomers are special cross-linked polymer materials combining the large elastic deformability of elastomers with the orientational orders of liquid crystals. This model exhibits markedly different phenomena than the liquid…

偏微分方程分析 · 数学 2023-07-18 Xiaonan Hao , Jiaxi Huang , Ning Jiang

A self-consistent theory for the classical description of the interaction of light and matter at the nano-scale is presented, which takes into account spatial dispersion. Up to now, the Maxwell equations in nanostructured materials with…

光学 · 物理学 2020-10-07 J. V. Alvarez , Bahram Djafari-Rouhani , Dani Torrent

Liquid crystals in two dimensions undergo a first-order isotropic-to-quasi-nematic transition, provided the particle interactions are sufficiently ``sharp and narrow''. This implies phase coexistence between isotropic and quasi-nematic…

统计力学 · 物理学 2009-11-13 R. L. C. Vink

The paper concerns the construction of a compressible liquid-vapor relaxation model which is able to capture the metastable states of the non isothermal van der Waals model as well as saturation states. Starting from the Gibbs formalism, we…

偏微分方程分析 · 数学 2019-11-01 Hala Ghazi , Francois James , Hélène Mathis

The phase-field-crystal model is used to access the structure and thermodynamics of interfaces between two coexisting liquid crystalline phases in two spatial dimensions. Depending on the model parameters there is a variety of possible…

软凝聚态物质 · 物理学 2014-01-28 Simon Praetorius , Axel Voigt , Raphael Wittkowski , Hartmut Löwen

I put forward a continuum theory for active nematic gels, defined as fluids or suspensions of orientable rodlike objects endowed with active dynamics, that is based on symmetry arguments and compatibility with thermodynamics. The starting…

软凝聚态物质 · 物理学 2017-11-15 Stefano S Turzi

We examine the equilibrium configurations of a nematic liquid crystal with an immersed body in two-dimensions. A complex variables formulation provides a means for finding analytical solutions in the case of strong anchoring. Local…

软凝聚态物质 · 物理学 2024-03-01 Thomas G. J. Chandler , Saverio E. Spagnolie

We develop a Q-tensor model of nematic liquid crystals occupying a stationary surface which represents a fluidic material film in space. In addition to the evolution due to Landau--de\,Gennes energy the model includes a tangent viscous…

流体动力学 · 物理学 2023-10-06 Lucas Bouck , Ricardo H. Nochetto , Vladimir Yushutin

Recent experimental realization of ferroelectric nematic liquid crystalline phases stimulated material development and numerous experimental studies of these new phases, guided by their fundamental and applicative interest. In this…

软凝聚态物质 · 物理学 2022-08-18 Nerea Sebastián , Martin Čopič , Alenka Mertelj

We discuss the non-equilibrium critical phenomena in liquids, and the models for these phenomena based on local equilibrium and extended scaling assumptions. Special situations are proposed for experimental tests of the theory.…

统计力学 · 物理学 2009-10-31 Alexander Patashinski

Nematic liquid crystals exhibit both crystal-like and fluid-like features. In particular, the propagation of an acoustic wave shows an unexpected occurrence of some of the solid-like features at the hydrodynamic level, namely, the…

软凝聚态物质 · 物理学 2017-01-04 Stefano S. Turzi

Using a perturbative approach, an evolution equation for the space charge density, correct up to the third order, is deduced for arbitrary initial density profiles of the electron and ion fluids in a cold nonrelativistic plasma. The…

等离子体物理 · 物理学 2024-10-10 Subhasish Bag , Vikrant Saxena

We derive a F\"{o}ppl-von K\'{a}rm\'{a}n-type constitutive model for solid liquid crystalline plates where the nematic director may or may not rotate freely relative to the elastic network. To obtain the reduced two-dimensional model, we…

软凝聚态物质 · 物理学 2020-07-30 L. Angela Mihai , Alain Goriely

We study a simplified Ericksen-Leslie system modeling the flow of nematic liquid crystals with partially free boundary conditions. It is a coupled system between the Navier-Stokes equation for the fluid velocity with a transported heat flow…

偏微分方程分析 · 数学 2023-03-22 Fanghua Lin , Yannick Sire , Juncheng Wei , Yifu Zhou

We study the hydrodynamics of compressible active nematic liquid crystals in a three-dimensional and bounded domain, with a nonlinear viscosity tensor and nonhomogeneous boundary data, in a Landau-de Gennes framework. We prove the existence…

偏微分方程分析 · 数学 2026-01-06 Kuntal Bhandari , Apala Majumdar , Šárka Nečasová

We consider a differential model describing nonisothermal fast phase separation processes taking place in a three-dimensional bounded domain. This model consists of a viscous Cahn-Hilliard equation characterized by the presence of an…

偏微分方程分析 · 数学 2007-05-23 Maurizio Grasselli , Hana Petzeltova , Giulio Schimperna

Dynamics of small particles, both living such as swimming bacteria and inanimate, such as colloidal spheres, has fascinated scientists for centuries. If one could learn how to control and streamline their chaotic motion, that would open…

软凝聚态物质 · 物理学 2023-02-08 Oleg D. Lavrentovich