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Using Monte Carlo simulation, we study a fluid of two-dimensional hard rods inside a small circular cavity bounded by a hard wall, from the dilute regime to the high-density, layering regime. Both planar and homeotropic anchoring of the…

软凝聚态物质 · 物理学 2014-02-04 Daniel de las Heras , Enrique Velasco

The effect of strong confinement on the positional and orientational ordering is examined in a system of hard rectangular rods with length L and diameter D (L>D) using the Parsons-Lee modification of the second virial density functional…

软凝聚态物质 · 物理学 2018-01-24 Roohollah Aliabadi , Peter Gurin , Enrique Velasco , Szabolcs Varga

Packing under confinement could generate rich ordered structures through entropic effects, which is a fundamental problem in condensed matter, biophysics and material science. The influence of confinement to the anisotropic hard…

软凝聚态物质 · 物理学 2026-05-12 Zhongtian Yuan , Yao Li

Using transfer operator and fundamental measure theories, we examine the structural and thermodynamic properties of hard rectangles confined between two parallel hard walls. The side lengths of the rectangle ($L$ and $D$, $L>D$) and the…

软凝聚态物质 · 物理学 2017-05-16 Peter Gurin , Szabolcs Varga , Miguel Gonzalez-Pinto , Yuri Martinez-Raton , Enrique Velasco

Confinement can have a dramatic effect on the behavior of all sorts of particulate systems and it therefore is an important phenomenon in many different areas of physics and technology. Here, we investigate the role played by the softness…

We study the ground-state phases of a two-dimensional dipolar supersolid subjected to external periodic confinement by numerically solving the extended Gross--Pitaevskii equation. Focusing on a regime in which the unconfined system forms an…

量子气体 · 物理学 2026-03-31 Ze-Hong Guo , Kai Gan , and Qizhong Zhu

Confinement can significantly alter fluid properties, offering potential for specific technological applications. However, achieving precise control over the structural complexity of confined fluids and soft matter remains challenging, as…

软凝聚态物质 · 物理学 2024-11-20 Fabio Leoni , Erdal C. Oğuz , Giancarlo Franzese

The effect of cylindrical confinement on the phase behaviour of a system of parallel hard rods is studied using Onsager's second virial theory. The hard rods are represented as hard cylinders of diameter $D$ and length $L$, while the…

软凝聚态物质 · 物理学 2022-06-07 Szabolcs Varga , Yuri Martinez-Raton , Enrique Velasco

Single two dimensional polymers confined to a strip are studied by Monte Carlo simulations. They are described by N-step self-avoiding random walks on a square lattice between two parallel hard walls with distance 1 << D << N^\nu (\nu = 3/4…

软凝聚态物质 · 物理学 2007-05-23 Hsiao-Ping Hsu , Peter Grassberger

We review recent progress in the theoretical description of anisotropic hard colloidal particles. The shapes considered range from rods and dumbbells to rounded cubes, polyhedra and to biaxial particles with arbitrary shape. Our focus is on…

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…

The "melting" of self-formed rigid structures made of a small number of interacting classical particles confined in an irregular two-dimensional space is investigated using Monte Carlo simulations. It is shown that the interplay of…

无序系统与神经网络 · 物理学 2013-06-13 Dyuti Bhattacharya , Amit Ghosal

Monte Carlo simulations were employed to study two charged rods confined between two unlike charged plates, all immersed in a model electrolyte. Recently, it was shown that two rods immersed in a multivalent counterion solution may show…

介观与纳米尺度物理 · 物理学 2015-05-20 G. Odriozola , F. Jiménez-Ángeles , M. Lozada-Cassou

The behavior of a system of two-dimensional elongated particles (discorectangles) packed into a slit between two parallel walls was analyzed using a simulation approach. The packings were produced using the random sequential adsorption…

In this work we use Monte Carlo simulations to study the phase behavior of spherical caps confined between two parallel hard walls separated by a distance H. The particle model consists of a hard sphere of diameter \sigma cut off by a plane…

软凝聚态物质 · 物理学 2013-04-03 Carlos Avendano , Chekesha M. Liddell Watson , Fernando A. Escobedo

The impact of confinement on self-assembly of particles interacting with short-range attraction and long-range repulsion (SALR) potential is studied for thermodynamic states corresponding to local ordering of clusters or layers in the bulk.…

软凝聚态物质 · 物理学 2014-11-17 Jakub Pękalski , Alina Ciach , Noé G. Almarza

We study by Monte Carlo simulations and scaling analysis two models of pairs of confined and dense ring polymers in two dimensions. The pair of ring polymers are modelled by squared lattice polygons confined within a square cavity and they…

软凝聚态物质 · 物理学 2022-01-05 EJ Janse van Rensburg , E Orlandini

We present a comparative computer simulation study of the phase diagrams and anomalous behavior of two-dimensional ($2D$) and quasi-two-dimensional ($q2D$) classical particles interacting with each other through isotropic core-softened…

软凝聚态物质 · 物理学 2019-06-14 Yu. D. Fomin , E. N. Tsiok , V. N. Ryzhov

Numerical simulations using the Monte Carlo method were performed to study the electrical conductivity of two-dimensional films filled with rodlike particles (rods). The main goal was to investigate the effect of rod alignment on the…

We use Monte Carlo methods to study spinons in two-dimensional quantum spin systems, characterizing their intrinsic size $\lambda$ and confinement length $\Lambda$. We confirm that spinons are deconfined, $\Lambda \to \infty$ and $\lambda$…

强关联电子 · 物理学 2013-07-10 Ying Tang , Anders W. Sandvik
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