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相关论文: Membranes in rod solutions: a system with spontane…

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In multicomponent membranes, internal scalar fields may couple to membrane curvature, thus renormalizing the membrane elastic constants and destabilizing the flat membranes. Here, a general elasticity theory of membranes is considered that…

软凝聚态物质 · 物理学 2018-03-07 S. Alex Rautu

We consider an ideal gas of infinitely rigid rods near a perfectly repulsive wall, and show that the interfacial tension of a surface with rods on one side is lower when the surface bends towards the rods. Surprisingly we find that rods on…

软凝聚态物质 · 物理学 2015-06-25 K. Yaman , M. Jeng , P. Pincus , C. Jeppesen , C. M. Marques

We study the collective dynamics of self-propelled rods in an inhomogeneous motility field. At the interface between two regions of constant but different motility, a smectic rod layer is spontaneously created through aligning interactions…

软凝聚态物质 · 物理学 2018-02-14 Jens Grauer , Hartmut Löwen , Liesbeth M. C. Janssen

The assembly of curved protein rods on fluid membranes is studied using implicit-solvent meshless membrane simulations. As the rod curvature increases, the rods on a membrane tube assemble along the azimuthal direction first and…

软凝聚态物质 · 物理学 2016-05-18 Hiroshi Noguchi

We investigate how an externally imposed curvature influences lipid segregation on two-phase-coexistent membranes. We show that the bending-modulus contrast of the two phases and the curvature act together to yield a reduced effective line…

软凝聚态物质 · 物理学 2018-06-21 Fangfu Ye , Robin L. B. Selinger , Jonathan V. Selinger

A remarkable property of flexible self-avoiding elastic surfaces (membranes) is that they remain flat at all temperatures, even in the absence of a bending rigidity or in the presence of active fluctuations. Here, we report numerical…

软凝聚态物质 · 物理学 2025-01-14 A. D. Chen , M. C. Gandikota , A. Cacciuto

Induced by proteins within the cell membrane or by differential growth, heating, or swelling, spontaneous curvatures can drastically affect the morphology of thin bodies and induce mechanical instabilities. Yet, the interaction of…

软凝聚态物质 · 物理学 2018-01-31 Matteo Pezzulla , Norbert Stoop , Mark P. Steranka , Abdikhalaq J. Bade , Douglas P. Holmes

We elucidate the molecular forces leading to assembly of two dimensional membrane-like structures composed of a one rod-length thick monolayer of aligned rods from an immiscible suspension of hard rods and depleting polymers. We perform…

软凝聚态物质 · 物理学 2011-03-15 Yasheng Yang , Edward Barry , Zvonimir Dogic , Michael F. Hagan

We amplify previous arguments why mean curvature should be used as measure of integration in calculating the effective bending rigidity of fluid membranes subjected to a weak background curvature. The stiffening of the membrane by its…

统计力学 · 物理学 2009-10-31 H. A. Pinnow , W. Helfrich

We investigate the strong curvature that appears at the boundaries of a thin crumpled elastic membrane. We account for these high-curvature regions in terms of the stretching-ridge singularity believed to dominate the structure of strongly…

软凝聚态物质 · 物理学 2008-11-23 T. A. Witten

An elastic membrane that is forced to reside in a container smaller than its natural size will deform and, upon further volume reduction, eventually crumple. The crumpled state is characterized by the localization of energy in a complex…

材料科学 · 物理学 2011-03-30 Paula Mellado , Shengfeng Cheng , Andres Concha

Several numerical methods for measuring the bending rigidity and the spontaneous curvature of fluid membranes are studied using two types of meshless membrane models. The bending rigidity is estimated from the thermal undulations of planar…

软凝聚态物质 · 物理学 2011-11-16 Hayato Shiba , Hiroshi Noguchi

Using a combination of theory and experiments we study the interface between two immiscible domains in a colloidal membrane composed of rigid rods of different lengths. Geometric considerations of rigid rod packing imply that a domain of…

Motivated by recent experiments on biomimetic membranes exposed to several aqueous phases, we theoretically study the morphology of a membrane in contact with a liquid droplet formed via aqueous phase separation. We concentrate on membranes…

软凝聚态物质 · 物理学 2012-02-07 Halim Kusumaatmaja , Reinhard Lipowsky

Experimentally measuring the elastic properties of thin biological surfaces is non-trivial, particularly when they are curved. One technique that may be used is the indentation of a thin sheet of material by a rigid indenter, whilst…

We introduce and study the behavior of a tethered membrane of non-zero thickness embedded in three dimensions subject to an effective self-attraction induced by hydrophobicity arising from the tendency to minimize the area exposed to a…

软凝聚态物质 · 物理学 2012-06-12 Trinh X. Hoang , Jayanth R. Banavar , Amos Maritan

Using event-driven molecular dynamics simulations, we quantify how the self diffusivity of confined hard-sphere fluids depends on the nature of the confining boundaries. We explore systems with featureless confining boundaries that treat…

软凝聚态物质 · 物理学 2015-05-30 William P. Krekelberg , Vincent K. Shen , Jeffrey R. Errington , Thomas M. Truskett

We consider the interaction between two rods embedded in a fluctuating surface. The modification of fluctuations by the rods leads to an attractive long-range interaction between them. We consider fluctuations governed by either surface…

凝聚态物理 · 物理学 2009-10-28 Ramin Golestanian , Mark Goulian , Mehran Kardar

We study the mechanical buckling of a two dimensional membrane coated with a thin layer of superfluid. It is seen that a singularity (vortex or anti-vortex defect) in the phase of the quantum order parameter, distorts the membrane metric…

软凝聚态物质 · 物理学 2011-11-21 N. Upadhyaya , V. Vitelli

This paper presents a general and robust method for the fluid-structure interaction of membranes and shells undergoing large displacement and large added-mass effects by coupling an immersed-boundary method with a shell finite-element…

流体动力学 · 物理学 2023-08-15 Marin Lauber , Gabriel D. Weymouth , Georges Limbert
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