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The phase behavior of the system of parallel rigid triblock copolymers is examined using the second-virial density functional theory. The triblock particle consists of two identical infinitely thin hard rods of finite lengths on the…

软凝聚态物质 · 物理学 2007-10-15 Szabolcs Varga , Seth Fraden

Hard spherocylinders (cylinders of length $L$ and diameter $D$ capped at both ends with two hemispheres) provide a suitable model for investigating entropy-driven, mesophase formations in real colloidal fluids that are composed of rigid…

统计力学 · 物理学 2011-10-26 D. Costa , F. Micali , F. Saija , P. V. Giaquinta

We investigate the ordering properties of vertically-vibrated monolayers of granular cylinders in a circular container at high packing fraction. In line with previous works by other groups, we identify liquid-crystalline ordering behaviour…

软凝聚态物质 · 物理学 2017-05-16 Miguel Gonzalez-Pinto , Florentino Borondo , Yuri Martinez-Raton , Enrique Velasco

The concept of a vestigial nematic order emerging from a "mother" spin or charge density-wave state has been applied to describe the phase diagrams of several systems, including unconventional superconductors. In a perfectly clean system,…

强关联电子 · 物理学 2018-08-15 Tianbai Cui , Rafael M. Fernandes

Optical birefringence measurements on a rod-like liquid crystal (8OCB), imbibed in silica channels (7 nm diameter), are presented and compared to the thermotropic bulk behavior. The orientational and positional order of the confined liquid…

软凝聚态物质 · 物理学 2015-05-20 Andriy V. Kityk , Patrick Huber

Liquid crystals can self-organize into a layered smectic phase. While the smectic layers are typically straight forming a lamellar pattern in bulk, external confinement may drastically distort the layers due to the boundary conditions…

Large spin systems can exhibit unconventional types of magnetic ordering different from the ferromagnetic or N\'eel-like antiferromagnetic order commonly found in spin 1/2 systems. Spin-nematic phases, for instance, do not break…

Using Monte Carlo (MC) computer simulations we explore the self-assembly and ordering behavior of a hybrid, soft magnetic system consisting of small magnetic nano-spheres in a liquid-crystalline (LC) matrix. Inspired by recent experiments…

软凝聚态物质 · 物理学 2015-07-29 Stavros D. Peroukidis , Sabine H. L. Klapp

We report the discovery of a mixed orientational structure in the quasi-one-dimensional fluid of hard non-spherical bodies with the exact calculation of the thermodynamic and structural quantities using the transfer operator method. The…

软凝聚态物质 · 物理学 2025-10-13 Sakineh Mizani , Martin Oettel , Péter Gurin , Szabolcs Varga

We study experimentally the impact of spherical nanoparticles on the orientational order parameters of a host nematic liquid crystal. We use spherical core-shell quantum dots that are surface functionalized to promote homeotropic anchoring…

软凝聚态物质 · 物理学 2018-05-09 C. Kyrou , S. Kralj , M. Panagopoulou , Y. Raptis , G. Nounesis , I. Lelidis

Lamellar or smectic phases often have an intricate intralamellar structure that remains scarcely understood from a microscopic viewpoint. In this work, we use molecular dynamics simulations to study the effect of volume exclusion and…

软凝聚态物质 · 物理学 2025-01-22 Jaydeep Mandal , Henricus H. Wensink , Prabal K. Maiti

We present a Monte Carlo simulation of a polymer nematic for varying volume fractions, concentrating on the structure function of the sample. We achieve nematic ordering with stiff polymers made of spherical monomers that would otherwise…

软凝聚态物质 · 物理学 2009-10-28 Randall D. Kamien , Gary S. Grest

We study the stability of inhomogeneous liquid crystalline states in systems of monodisperse, stiff, charged rods. By means of a bifurcation analysis applied to the Onsager free energy for charged rods in strongly nematic states, we…

软凝聚态物质 · 物理学 2012-07-17 H. H. Wensink

We study the effect of random porous matrices on the ordering in nematic liquid crystals. The randomness destroys orientational lang-range order and drives the liquid crystal into a glass state. We predict two glass phases one of which…

无序系统与神经网络 · 物理学 2009-10-31 D. E. Feldman

Living materials at different length scales manifest active nematic features such as orientational order, nematic topological defects, and active nematic turbulence. Using numerical simulations we investigate the impact of fluid inertia on…

软凝聚态物质 · 物理学 2022-08-10 Roozbeh Saghatchi , Mehmet Yildiz , Amin Doostmohammadi

We use monomer-resolved numerical simulations to study the positional and orientational structure of a dense dendrimer solution, focusing on the effects of dendrimers' prolate shape and deformability on the short-range order. Our results…

软凝聚态物质 · 物理学 2015-06-17 Ioannis A. Georgiou , Primož Ziherl , Gerhard Kahl

An earlier paper presented the potentially significant discovery that disturbances in simplified simulations of a stellar disc model that was predicted to be stable in linear theory grew to large amplitude over a long period of time. The…

星系天体物理 · 物理学 2020-01-15 J. A. Sellwood

We show that "dry" active nematics, e.g. collections of shaken elongated granular particles, exhibit large-scale spatiotemporal chaos made of interacting dense, ordered, band-like structures in a parameter region including the linear onset…

软凝聚态物质 · 物理学 2014-09-16 Sandrine Ngo , Anton Peshkov , Igor S. Aranson , Eric Bertin , Francesco Ginelli , Hugues Chaté

We study the motion of tiny heavy inertial particles advected by a two dimensional inviscid fluid flow composed of $N$ identical point vortices regularly placed on a ring, and forming a crystal. In the limit of weak particle inertia, we…

流体动力学 · 物理学 2024-07-08 Jean-Régis Angilella

Recent experiments on vesicles formed from block copolymers with liquid-crystalline side-chains reveal a rich variety of vesicle morphologies. The additional internal order ("structure") developed by these self-assembled block copolymer…

软凝聚态物质 · 物理学 2012-05-21 Xiangjun Xing , Homin Shin , Mark J. Bowick , Zhenwei Yao , Lin Jia , Min-Hui Li
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